Question

What is the volume of the prism below?
http://media.apexlearning.com/Images/200701/05/76f21f4f-eb56-4629-bd96-6f4cd7751c59.gif
A. 288 units3
B. 180 units3
C. 56 units3
D. 144 units3

Answer 1

Take the area of the triangle times the length. That should be the volume.

Answer 2

oooooo so its 144?

Answer 3

That's what I got.

Answer 4

Says correct. Thank you !

Answer 5

@retirEEd Could you help me with another?

Answer 6

If you want, but the more you ask the more you will have to do on your own. That is so I know you are learning.

Answer 7

Yes of course. I just am not sure how to it for a cylinder

Answer 8

What is the volume of the cylinder below?
http://media.apexlearning.com/Images/200701/05/93a92414-63c7-441e-93c4-5763395bb7e5.gif

Answer 9

A. 2042 units3
B. 968 units3
C. 1815 units3
D. 352 units3

Answer 10

Same process, different area to calculate.

Answer 11

i got 1796.99 when i calculated area

Answer 12

not sure what to do after that

Answer 13

What area did you calculate?

write out your steps, because I got a different answer for the area.

Answer 14

I used the google calculator to quickly get the area. Ohh says surface area

Answer 15

oops

Answer 16

Remember how you solved for the volume of a triangular prism. You found the area of the triangle times the length.

How would you solve for the volume of a cylinder?

Answer 17

hmm thats where i got confused. So when i calculate the area, i have to times it by the base and height ? And to verify its area im looking for, not surface area?

Answer 18

Just the height and NOT the surface area.

Remember "area of the triangle times the length" but now you have a cylinder instead of a prism.

Answer 19

Would the area be 380?

Answer 20

A = π x 11^2 = 380

Answer 21

The area of the circular end is pi*11^2 and that equals 380.1 square units. Good job!

Answer 22

So then 380x15 = 5700

Answer 23

Yeah now come the tough question. Which answers is it?

A. 2042 units3
B. 968 units3
C. 1815 units3
D. 352 units3

Answer 24

Thats what lost me ..

Answer 25

how would i figure that out? what additional step would i have to do?

Answer 26

I think you copied the wrong set of answers or post the wrong question.

Answer 27

There is the pi symbol before units

Answer 28

i will screenshot it, one sec

Answer 29

just divide 5700 by pi

Answer 30

Would that be C then?

Answer 31

Correct. I appreciate it sir !