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).
area of SEMI-circle on the left = 1/2 pi (42) cm2
triangles (two of them) area = 2 * 1/2 * 10 * 4 cm2
add them together
Perimeter of semi circle 1/2 pi * 8 cm
find hypotnuse of triangles = sqrt (10^2 + 4^2 ) = sqrt 116 there are two of them so 2 * sqrt 116 cm
Add the REDs ..... cm