Question

Find the radius of the sphere if its surface area is 144 ^2

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Answer 1

Answer:

3.38

Step-by-step explanation:

surface area = 4× π× r²

                     = 4× 22 ×r² = 144

                             7

                     r² = 144× 7 ÷ 4

                                     22

                    √ r² = √11.45

                       r = 3.38