Asked by anoynomous

A cone 7dm high and 6 dm in diameter is placed on the ground. Sand is poured over it until conical heap 21 dm high and 33 dm circumference at the bottom is formed. Find how many m^3 of sand is there?
Answered by Steve
volume of cone is 1/3 pi r^2 h

subtract the small cone from the large cone

That's how much is sand.
Answered by anoynomous
what about 33dm circumfernce
Answered by anoynomous
what about 33dm circumfernce
Answered by Steve
well, you know that C = 2pi r, so,

r = 33/2pi

Forgot about that?
Answered by Vvuggogdrood
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