Remark
I take it the semicircles cover the full width of the paper.
So the radius is 12/2 = 6 cm
Since there are two of them, the area = a full circle.
Step One
Find the area of the rectangle before the cuts were made.
Area = L * W
L = 27
W = 12
Area = 27 * 12 = 324 cm^2
Step Two
Find the area of the circle cut outs.
r = 6
Area = pi * r^2
Area = 3.14 * 6^2
Area = 3.14 * 36
Area = 113.04 cm^2
Step Three
Find the total area left
Total Area Left = rectangle - circle
Total Area Left = 324 - 113.04
Total Area left = 210.96 cm^2 Answer
