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

Answer:

Radius is 2.18

Step-by-step 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:

$4.77= r^2$

$\sqrt{4.77}= r$

$2.18= r$