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Surface Areas and Volumes
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29/07/2021 10:57 am
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Find the radius of a sphere whose surface area is 154 cm2. (Assume π = 22/7)
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29/07/2021 10:58 am
Let the radius of the sphere be r.
Surface area of sphere = 154 (given)
4πr2 = 154
r2 = (154 × 7)/(4 × 22) = (49/4)
r = (7/2) = 3.5
The radius of the sphere is 3.5 cm.