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Question
Find the diameter of the sphere for the following :
Surface Area = `576pi`cm2
Solution
Surface Area = `576pi`cm2
Surface area = `4pir^2`
⇒ `4pir^2 = 576pi`
⇒ `4r^2 = 576`
⇒ `r^2 = 576/4`
⇒ `r^2 = 144`
⇒ r = 12 cm
Radius = 12 cm ⇒ Diameter = 2r = 24 cm
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