Find the area and the perimeter of the shaded regions below. Give your answer as a completely simplified exact value in terms of π (no approximations). The figures below are based on semicircles or quarter circles
Area of a quarter circle of radius 12 = 1/4 pi 12^2
subtract the triangle area: 1/2 b h = 1/2 12 x 12
perimeter = hypotenuse of right triangle with legs = 12 and 12 sqrt (122 + 122 )
+ 1/4 pi x d d = diameter = 24
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