Question

Find the surface area and volume of a sphere with a radius r=0.8ft. Round your answer to the nearest tenth

Answer 1

To solve this problem you must apply the proccedure shown below:

1. You must use the formula for calculate the volume of a sphere and the formula for calculate the surface area of a sphere, which are:

$V=\frac{4}{3} \pi r^{3}$

$SA=4\pi r^{2}$

Where $r$ is the radius ($r=0.8ft$)

2. The volume is:

$V=\frac{4}{3} \pi( 0.8ft)^{3} =2.1ft^{3}$

3. The surface are is:

$SA=4\pi (0.8ft)^{2} =8.0ft^{2}$

The answer are: The volume is $2.1 ft^{3}$ and the surface area is $8.0ft^{2}$