Question

find the diameter of sphere whose surface area is 154 metre square​

Answer 1

Answer:

surface area of sphere = 4pie r square

154 = 4 × 22/7 × r square

154 ×7/ 4×22 = r square

1078 / 88 = r square

12.5 = r square

THEREFORE r square = square root of 12.5

THEREFORE r = 3.5

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