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14 March, 08:47

What is the radius of a sphere if its surface area is 2,122.64 square inches? (Use 3.14 for π.)

A. 11 in

B. 13 in

C. 121 in

D. 169 in

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Answers (1)
  1. 14 March, 08:56
    0
    13

    Step-by-step explanation:

    the surface area of a sphere is π x 4 x radius²

    so let the radius be r

    π x 4 x r² = 2122.64

    r = 13 inches
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