Question

Water is pouring into a right circular cone with altitude=12 inches and diameter=4 inches. Which formula below would correctly measure the rate at which the volume is increasing when the altitude is h inches and the altitude is growing at a rate of dh/dt.

I know the answer is: dV/dt=1/36(pi)(h)^2(dh/dt) but i need to figure out how to get there.

Answer 1

[2\pi r\]

Answer 2

2πr