find the radius of a phere whose surface area is 154cm sq units
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Surface area of spere = 154
4πR² = 154
R² = 154×7/4×22 = 49/4
R = 7/2 = 3.5cm
radius is 3.5cm
4πR² = 154
R² = 154×7/4×22 = 49/4
R = 7/2 = 3.5cm
radius is 3.5cm
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