Question

A cone has a volume of 75 pie and a height of 9 cm.
What is the cone's diameter?
Enter your answer in the box.

Answer 1

Answer:

Volume of the cone is given by

$V = \frac{\pi {r}^{2}h }{3} = 75\pi$

$= > \frac{\pi {r}^{2}9 }{3} = 75\pi$

$= > {r}^{2} = \frac{75\pi}{\pi \times 3} = 25$

$= > r = \sqrt{25} = 5$

Diameter of the cone = 2×5 cm = 10 cm