Question

A cone has a diameter of 18 units and height of 8 units. What is its volume? 72π cubic units 216π cubic units 648π cubic units 864π cubic units

Answer 1

Answer:

Option (a) is correct.

The volume of given cone is 72π cubic units.

Step-by-step explanation:

Given : A cone has a diameter of 18 units and height of 8 units.

We have to determine the volume of the given cone.

We know Volume of cone = $\frac{1}{3} \pi r^2 h$

Where r is radius of cone

h is the height  of cone

Given : diameter = 18units  so, radius is half of diameter = 9 units

height = 8 units

Substitute, we have,

Volume of cone = $\frac{1}{3} \pi\cdot (9)^2\cdot 8$

Simplify, we have,

Volume of cone = $72\pi$

Thus, the volume of given cone is 72π cubic units.

Option (a) is correct.

Answer 2

B 216 because if you multiply pi with the answer you get 678.58