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#7576 2017-09-20 16:14:22

ganesh
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Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

#6214. Three solid spheres of radii 3 cm, 4 cm, and 5 cm respectively are melted and converted into a single solid sphere. Find the radius of this sphere.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7577 2017-09-22 01:15:15

math9maniac
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From: Tema
Registered: 2015-03-30
Posts: 407

Re: 10 second questions


Only a friend tells you your face is dirty.

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#7578 2017-09-22 01:54:36

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6214 is correct. Marvelous, math9maniac!

#6215. A well of diameter 3 meters is dug 14 meter deep. The earth taken out of it is spread evenly all around it to a width of 4 meters to form an embankment. Find the height of the embankment.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7579 2017-09-24 00:52:34

ganesh
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Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

#6216. Solve when

.

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7580 2017-09-24 01:36:20

Monox D. I-Fly
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Registered: 2015-12-02
Posts: 859

Re: 10 second questions

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#7581 2017-09-24 03:13:13

ganesh
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Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6216 is correct. Neat work, Monox D. I-Fly!

#6217. If

, find the value of
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7582 2017-09-24 11:22:38

Monox D. I-Fly
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Posts: 859

Re: 10 second questions

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#7583 2017-09-24 15:45:49

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6217 is correct. Neat work, Monox D. I-Fly!

#6218. A father is three times as old as his son. In 12 years time, he will be twice as old as his son. Find the present ages of the father and the son.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7584 2017-09-26 02:34:28

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

#6219. If

, find the value of
and
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7585 2017-09-30 22:42:49

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

#6220. If

, find
and
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7586 2017-10-02 13:36:29

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

#6221. In a triangle ABC, right angled at B, AB = 24 cm, BC =7 cm. Determine sin A and cos A.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7587 2017-10-04 01:32:29

Monox D. I-Fly
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Posts: 859

Re: 10 second questions

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#7588 2017-10-04 01:45:44

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6221 (two parts) is correct. Good work, Monox D. I-Fly!

#6222. In a triangle ABC, right angled at A, if

, find the value of sinBcosC + cosBsinC.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7589 2017-10-04 01:53:32

Monox D. I-Fly
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Registered: 2015-12-02
Posts: 859

Re: 10 second questions

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#7590 2017-10-04 02:43:57

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6222 is correct. Excellent, Monox D. I-Fly!

#6223. In ΔABC, right angled at B, if

, find the value of sinAcosC + cosAsinC.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7591 2017-10-04 11:45:29

Monox D. I-Fly
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Registered: 2015-12-02
Posts: 859

Re: 10 second questions

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#7592 2017-10-04 14:45:57

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6223 is correct. Good going, Monox D. I-Fly!

#6224. If A and B are acute angles such that

find A + B.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7593 2017-10-04 15:03:47

Monox D. I-Fly
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Registered: 2015-12-02
Posts: 859

Re: 10 second questions

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#7594 2017-10-04 16:22:09

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6224 is correct. Excellent, Monox D. I-Fly!

#6225. If

, find the value of
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7595 2017-10-04 17:37:24

Monox D. I-Fly
Member
Registered: 2015-12-02
Posts: 859

Re: 10 second questions

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#7596 2017-10-04 18:39:11

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6225 is correct. Excellent, Monox D. I-Fly!

#6226. If

, find the value of
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7597 2017-10-04 19:06:45

Monox D. I-Fly
Member
Registered: 2015-12-02
Posts: 859

Re: 10 second questions

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#7598 2017-10-04 19:58:33

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6226 is correct. Marvelous, Monox D. I-Fly!

#6227. If

, find the value of
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#7599 2017-10-04 20:38:59

Monox D. I-Fly
Member
Registered: 2015-12-02
Posts: 859

Re: 10 second questions

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#7600 2017-10-04 21:05:53

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,304

Re: 10 second questions

Hi,

The solution #6227 is correct. Good work, Monox D. I-Fly!

#6228. If

, find
,and
.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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