Devin won a tiny bouncy ball at the school carnival. The diameter of the ball is 1.25 inches. To the nearest hundredth of a squa

Question

3 years ago

14

re inch, what is the surface area of the ball? Use 3.14 for pi

1 answer:

jolli1 [7] · Answer 1 · 2022-02-11T13:34:20+03:00

jolli1 [7]3 years ago

5 0

Answer:

SA = 4.91 in²

Step-by-step explanation:

A ball is a sphere, and the surface area of a sphere is

$SA=4\pi r^2$

If our diameter is 1.25, the radius is half of that at r = .625

Filling in, we have

SA = 4(3.14)(.625)² and

SA = 4(3.14)(.390625) so

SA = 4.91 in²