I need to know how to get the volume of a cylinder that has a diameter of 3 feet and a length of 12 feet

Question

owlfred · Answer

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anonymous · Answer

Okay. The volume of a cylinder is given as: $$V=\pi r^2 h$$. You are given the diameter but you know that the radius is just half the diameter. So, the radius would be 1.5 feet. And the height (length) is 12 feet. So the volume is: $$V=\pi (1.5)^2 (12)=27\pi$$

anonymous · Answer

the conclusion that is given is 84.78 cubic feet? for the life of me i cannot come up with this answer

anonymous · Answer

The answer I gave was 27pi. If you take 27 and multiply it by pi (~3.14159) You should get 84.78 cubic feet.

anonymous · Answer

yes this would be the answer

anonymous · Answer

thanks my brain can stop hurting now

anonymous · Answer

Haha, you're welcome :) Let me know if you need any more help!