Question

The figure shows the blueprint that a contractor uses to design ice-skating rinks. Which expression gives the area of the spectator section shaded in green?

Answer 1

x²-1/8 π x²

Explanation:

Answer 2

First you would want to find the area of the square and the semi circle separately then subtract the area of the semicircle from the square:
Square A=x^2
Semicircle A=[pi(x/2)^2]/2
Green area A=(x^2)-((pi(x/2)^2)/2)
Hope this helps :)