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The surface area of a sphere is found using the formula = 4² where r is the radius. A playground ball has a surface area of 452.16 square inches. What is the radius of the ball? Use 3.14 for pi

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Answer:

Find the surface area of a sphere whose radius is 6cm?

Solution:

SA = 4 × π × r2

SA = 4 × π × 62

SA = 4 × π × 36

SA = 452cm2

Step-by-step explanation:

The radius of the ball is 6 inches.

What is surface area of the sphere?

The formula for the surface area of a sphere of radius r is 4πr².

According to question,

We have surface area of ball = 452.16 square inches

SA = 4πr²

Substitute the values of surface area of ball,

452.16 = 4πr²

452.16 = 4 × 3.14 × r²   [π = 3.14]

452.16 = 12.56 × r²

r² = 452.16/12.56

r² = 36

r² = 6²

r = 6

Hence, radius of the ball = 6 inches.

Learn more about surface area of sphere here:

brainly.com/question/14692728

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