SOLUTION: If a right circular cone has radius of 9 and height of 12, what is its volume? (leave in terms of pii)

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Question 390377: If a right circular cone has radius of 9 and height of 12, what is its volume?
(leave in terms of pii)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
V=%281%2F3%29%2Api%2Ar%5E2%2Ah Start with the volume of a cone formula.


V=%281%2F3%29%2Api%2A%289%29%5E2%2A%2812%29 Plug in r=9 and h=12


V=%281%2F3%29%2Api%2A%2881%29%2A%2812%29 Square 9 to get 81.


V=%281%2F3%29%2Api%2A%28972%29 Multiply 81 and 12 to get 972.


V=324pi Multiply 1%2F3 and 972 to get 972%2F3=324.


So the volume is 324pi cubic units.


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