# geometry

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A pile of gravel is conical in shape. If the diameter is approximately 6.8m and the height is 2.8m, what is the volume of gravel in the pile.

• geometry -

v = (1/3)pi(r^2)h
r = d/2
= 6.8/2
= 3.4
v = (1/3)pi(3.4^2)(2.8)

• geometry -

still don't get this formula could you show me how to get the answer in more details?

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