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Law Incorporation [45]
3 years ago
7

your friend says that the volume of a sphere with a radius r is four times the volume of a cone with radius r. when is this true

? Justify your answer
Mathematics
1 answer:
Ierofanga [76]3 years ago
7 0
Volume of a sphere is given by the formula: V_{\circ}=\frac43\pi r^3

If we pull the 4 out front we have, V_{\circ}=4\left(\frac13\pi r^3\right).

Volume of a cone is given by the formula: V_{\triangle}=\frac{1}{3}\pi r^2\cdot h

Notice that if the height of the cone is equal to the radius, V_{\triangle}=\frac13\pi r^2\cdot r

then it's exactly what we see in our volume formula without the 4!
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