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## #51 2013-09-24 01:31:11

demha
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### 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

## #52 2013-09-24 01:39:35

bobbym
Administrator

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### 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

Answer is E.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #53 2013-09-24 03:05:16

bob bundy
Moderator

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### 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

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #54 2013-09-24 03:13:49

bob bundy
Moderator

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### 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

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #55 2013-09-24 03:44:27

demha
Full Member

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### 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.

Last edited by demha (2013-09-24 04:34:06)

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

## #56 2013-09-24 06:21:31

bobbym
Administrator

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### Re: Prisms and Pyramids

Hi;

Very good result.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #57 2013-09-24 16:53:29

bob bundy
Moderator

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### Re: Prisms and Pyramids

hi demha,

Well done for that result!

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #58 2013-11-05 03:57:07

rogerwaters
Full Member

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### 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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