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Ghella [55]
4 years ago
14

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

re inch, what is the surface area of the ball? Use 3.14 for pi
Mathematics
1 answer:
jolli1 [7]4 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

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