for 11, answer is 103.7 cm^2 and for 12 answer is: 84.1 cm^2 is that right or not? thx
7^2*pi - 4^2*pi is question 11 because you're subtracting the small white circle from the large circle.
14*28 - 14^2*pi/2 is question 12 because you're subtracting the half circle from the rectangle.
Nice job. :))
=^._.^=
