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=(4)/(3) \pi r^(3)`

`SA=4\pi r^(2)`

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

2. The volume is:

`V=(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)`