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#3051 2014-10-03 15:13:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solution #2012 is perfect. Keep it up!
#2013. Evaluate:
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3052 2014-10-03 16:08:11
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3053 2014-10-03 17:11:25
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solution #2013 is perfect. Fantastic!
#2014. Evaluate :
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3054 2014-10-03 17:17:39
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3055 2014-10-03 23:41:37
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solution 32014 is correct. Good work!
#2015. A ramp for unloading a moving truck has an angle of elevation of
. If the top of the ramp is 0.9 meter above the ground level, then find the length of the ramp.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3056 2014-10-04 02:27:11
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3057 2014-10-04 08:30:10
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
the solution #2015 is perfect. Marvelous!
#2016. A girl of height 150 centimeters stands in front of a lamp-post and casts a shadow of length
centimeters on the ground. Find the angle of elevation of the top of the lamp-post.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3058 2014-10-05 02:16:23
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi,
#2017. A right circular cylinder has radius of 14 centimeters and height of 8 centimeters. Find the curved surface area and total surface area. Use
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3059 2014-10-05 03:03:48
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3060 2014-10-05 09:16:29
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solutions #2016 and #2017 are correct. Brilliant!
#2018. The total surface area of a right circular cylinder is 60 square centimeters. If its diameter of the base is 14 centimeters, find the height and curved surface area of the cylinder. (Use
).It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3061 2014-10-05 21:43:11
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi.
#2019. Curved surface area and circumference at the base of a right circular cylinder are 4400 square centimeters and 110 centimeter respectively. Find its height and diameter. (Use
).It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3062 2014-10-05 23:08:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3063 2014-10-06 00:23:04
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solution #2019 (both parts) are correct. Marvelous!
#2020. A mansion has 12 right cylindrical pillars each having radius 50 centimeters and height 3.5 meters. Find the cost to paint the lateral surface of the pillars at $20 per square meter. Use
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3064 2014-10-06 05:41:00
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3065 2014-10-06 06:46:18
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solution #2020 is perfect. Remarkable!
#2021. The radii of two right circular cylinders are in the ratio 3:2 and their heights are in the ratio 5:3. Find the ratio of their curved surface areas.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3066 2014-10-07 01:03:26
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi,
#022. The radius and the height of a right circular solid cone are 7 centimeters and 24 centimeters respectively. Find its curved surface area and the total surface area. Use
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3067 2014-10-07 06:53:33
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3068 2014-10-07 08:34:10
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The first part of the solution #2022 is correct (550 square centimeters). Neat job!
The latter part I get
#2023. If the vertical angle and the radius ofa right circular cone are
and 15 centimeters respectively, then find its height and slant height.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3069 2014-10-07 14:44:02
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3070 2014-10-07 18:40:29
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solution #2022 is correct (both parts). Marvelous!
#2023. If the circumference of the base of a cone is 236 centimeters and its slant height is 12 centimeters, find its curved surface area. Use
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
Offline
#3071 2014-10-07 21:21:05
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3072 2014-10-08 01:17:20
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solution #2023 is correct. Excellent!
#2024. If the surface area of a sphere is 98.56 square centimeters, find the radius of the sphere. Use
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3073 2014-10-08 08:56:57
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi,
#2025. If the curved surface area of a solid hemisphere is 2772 square centimeters, then find its total surface area.
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3074 2014-10-08 13:07:08
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3075 2014-10-08 17:57:09
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,266
Re: Oral puzzles
Hi bobbym,
The solution #2025 is correct. Marvelous!
#2026. Radii of two solid hemispheres are in the ratio 3:5. Find the ratio of their curved surface areas and the area of their total surface areas.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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