Question 113

If the total suface area of a hemisphere is 27$$\pi$$ square cm, then the radius of the base of the hemisphere is

Solution

Let the radius of the hemisphere be $$r$$

=> Total surface area of hemisphere = $$3 \pi r^2 = 27 \pi$$

=> $$r^2 = 9$$

=> $$r = \sqrt{9} = 3$$ cm

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