Question

The volume of a cone is 31.4 cm3 and the radius is 2 cm. What is the height of the cone? Use 3.14 for π. Round to the nearest tenth, if needed.

A) 22.5 cm
B) 7.5 cm
C) 15 cm
D) 41.9 cm

Answer 1

Hello There!

The formula is 3 (v/πr²)
Substitute the values in:
3 (31.4/π2²)
Solve:
The height is 7.5cm.
Therefore, making your answer B.

Hope This Helps You!
Good Luck :)

- Hannah ❤

Answer 2

It's (B) 7.5 cm

h= (3V) / (πr^2)