find the volume of a sphere whose surface area is 154
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surface area = 4πr2 = 154
r2 = 154 ×7 / 22 ×4 = 49/4 = 7/2cm
volume = 4/3πr3 = 539 /3 = 179.66 (approx)
r2 = 154 ×7 / 22 ×4 = 49/4 = 7/2cm
volume = 4/3πr3 = 539 /3 = 179.66 (approx)
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