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Question 129
If the diameter of a sphere is 14 cm., then what is the curved surface area (in $$cm.^{2}$$) of the sphere?
Solution
Radius of sphere = 7 cm
Curved surface area = $$4\pi r^2$$
= $$4\times\frac{22}{7}\times(7)^2=616$$ $$cm^2$$
=> Ans - (A)
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