Question

In the rectangle below, the two quarter circles are congruent. Find the area of the shaded of the shaded region.

Answer 1

rectangle:
length = 12
width = 6
area of rectangle = length times width = 12 x 6 = 72

area of circle = pi r^2 = 3.14 (6)^2 = 113.1
1/2 circle = 113.1 / 2 = 56.55

the area of the shaded of the shaded region = 72 - 56.55 = 15.45

answer
15.45