Question

A ball has a surface area of 26.87 square feet. To the nearest tenth of a foot, what is the radius of the ball? Use π = 3.14.

Answer 1

about 1.5 feet

Explanation:

First we need to note the equation to find the surface area of a sphere. This is 4πr^2.

4πr^2=Surface Area

4πr^2=26.87

4(3.14)r^2=26.87 Substitute

r^2=26.87/(4*3.14) Divide

r^2=26.87/12.56 Simplify

r=√(26.87/12.56) Find square root of both sides

r≈1.5 Do the calculations

So the radius of the ball is about 1.5 feet.

Answer 2

Answer:1.5 ft

Explanation:

Given

Surface area of ball=
`26.87 ft^2`

And we know surface area of ball is =
`4\pi r^2`

Equating

`26.87=4* 3.14* r^2`

`r^2=2.1393`

`r=1.4626\approx 1.5`