Acone 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

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 =

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 =

Simplify, we have,

Volume of cone =

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

Option (a) is correct.

55

step-by-step explanation: