Question

A sphere has a surface area of 60 square feet. Which choice is the best approximation of its radius? Use 3.14 to approximate pi.

Answer 1

2.2

Explanation:

Answer 2

Radius is 2.18

Explanation:

We have been given the surface area of sphere 60 square feet

And formula for area of sphere is
`4{\pi}r^2`

using
`{\pi}=3.14`

On substituting the values
`60=4\cdot 3.14\cdot r^2` we get:

`60=4\cdot 3.14\cdot r^2`

On simplification we get:

`4.77= r^2`

`√(4.77)= r`

`2.18= r`