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## #51 2013-09-23 03:31:11

demha
Member
Registered: 2012-11-25
Posts: 195

### Re: Prisms and Pyramids

I have a rectangle, with a length of 7 and a width of 4:

15. What is the perimeter? - Answer: E
A 31
B 26
C 58
D 35
E 22
F 59

16. What is the area? - Answer: A
A 28
B 65
C 79
D 13
E 10
F 19

This rectangle just became the base of a regular prism, with a height of 6:

17. What is the lateral area? - Answer: F
A 119
B 873
C 256
D 349
E 332
F 132

18. What is the total surface area? - Answer: D
A 119
B 873
C 256
D 188
E 332
F 132

19. What is the volume? - Answer: E
A 651
B 327
C 395
D 221
E 168
F 342

20. What is the area of the largest rectangular side? - Answer: D
A 65
B 32
C 36
D 42
E 16
F 34

"The thing about quotes on the Internet is you cannot confirm their validity"
~Abraham Lincoln

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## #52 2013-09-23 03:39:35

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

### Re: Prisms and Pyramids

Hi;

For 13) you indicate that you need some help.

You have:

h = 4
b = 6
l  = 8

V = ( 4 x 6 x 8 ) / 2 = 96

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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## #53 2013-09-23 05:05:16

bob bundy
Moderator
Registered: 2010-06-20
Posts: 7,979

### Re: Prisms and Pyramids

hi demha

Firstly Q6-10 are all correct.  Well done!

Q11 and Q12 and Q14 are also correct.

I'll look at the last section in a new post

Bob

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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## #54 2013-09-23 05:13:49

bob bundy
Moderator
Registered: 2010-06-20
Posts: 7,979

### Re: Prisms and Pyramids

I have a rectangle, with a length of 7 and a width of 4:

15. What is the perimeter? - Answer: E
A 31
B 26
C 58
D 35
E 22
F 59

Correct.

16. What is the area? - Answer: A
A 28
B 65
C 79
D 13
E 10
F 19

Correct.

This rectangle just became the base of a regular prism, with a height of 6:

17. What is the lateral area? - Answer: F
A 119
B 873
C 256
D 349
E 332
F 132

Correct.

18. What is the total surface area? - Answer: D
A 119
B 873
C 256
D 188
E 332
F 132

Correct.

19. What is the volume? - Answer: E
A 651
B 327
C 395
D 221
E 168
F 342

Correct.

20. What is the area of the largest rectangular side? - Answer: D
A 65
B 32
C 36
D 42
E 16
F 34

Correct.

Well done.

Bob

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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## #55 2013-09-23 05:44:27

demha
Member
Registered: 2012-11-25
Posts: 195

### Re: Prisms and Pyramids

Hi Bobbym,
I actually just wanted help to do the equation my self, not have someone else do it for me but thank you very much!

And Bob I thank you too for your help!

Sent in the lesson and got 20/20.:cool:

Last edited by demha (2013-09-23 06:34:06)

"The thing about quotes on the Internet is you cannot confirm their validity"
~Abraham Lincoln

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## #56 2013-09-23 08:21:31

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

### Re: Prisms and Pyramids

Hi;

Very good result.

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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## #57 2013-09-23 18:53:29

bob bundy
Moderator
Registered: 2010-06-20
Posts: 7,979

### Re: Prisms and Pyramids

hi demha,

Well done for that result!

Bob

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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## #58 2013-11-04 04:57:07

rogerwaters
Member
Registered: 2013-11-02
Posts: 85

### Re: Prisms and Pyramids

What is the answer to number 5?
D or A? Or something else?

I think there are things in my story that have helped my creativity. Your father being killed, for instance, is one of the best things that could happen to a kid if he's going to write poetry or songs.
-Roger Waters

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