Find the volume of the given prism. Round to the nearest tenth if necessary.

I don't know how to do this...
Here is the prism. https://www.connexus.com/content/media/461958-3232011-31122-PM-783808165/res00000/ppg/examview/S_GEOMB_05_07_Q/mc001-1.jpg

Question

Find the volume of the given prism. Round to the nearest tenth if necessary. 

I don't know how to do this...
Here is the prism. https://www.connexus.com/content/media/461958-3232011-31122-PM-783808165/res00000/ppg/examview/S_GEOMB_05_07_Q/mc001-1.jpg

mahoganie.carson · Answer

do you have any answer choices?

bela · Answer

1,519 ft^3
852 ft^3
1,512 ft^3
1,500 ft^3

mahoganie.carson · Answer

what do you think is the answer?

bela · Answer

I don't know because I don't know how to solve the problem...

mahoganie.carson · Answer

Just pick one you might be right

bela · Answer

C?

mahoganie.carson · Answer

You are correct

mahoganie.carson · Answer

Do want to know how it's solved ?

bela · Answer

Sure.

mahoganie.carson · Answer

So this is how i did it 

12 x 18 x 7 = 1,512

bela · Answer

Okay, thanks.

mahoganie.carson · Answer

Welcome :)