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

Answer:

The volume of air in buoy is 3.05 cubic meters.

Step-by-step explanation:

We are given the following in the question:

Diameter =  1.8 meters

Radius, r =

$r = \dfrac{d}{2} = \dfrac{1.8}{2} = 0.9$

The radius of buoy is 0.9 meters.

Volume of air in buoy:

Volume of sphere =

$V = \dfrac{4}{3}\pi r^3\\\\V = \dfrac{4}{3}\times 3.14\times (0.9)^3\\\\V=3.05208\\V \approx 3.05$

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