Question

A buoy used to mark the swimming area at a local beach is in the shape of a sphere that has a diameter of 1.8 meters.About what is the volume of air in the buoy?

Answer 1

The volume of air in buoy is 3.05 cubic meters.

Explanation:

We are given the following in the question:

Diameter = 1.8 meters

Radius, r =

`r = (d)/(2) = (1.8)/(2) = 0.9`

The radius of buoy is 0.9 meters.

Volume of air in buoy:

Volume of sphere =

`V = (4)/(3)\pi r^3\\\\V = (4)/(3)* 3.14* (0.9)^3\\\\V=3.05208\\V \approx 3.05`

Thus, the volume of air in buoy is 3.05 cubic meters.