04-06-2019
Mathematics

contestada

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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04-06-2019

Answer:

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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