Question

A rectangle is placed around a semicircle as shown below. The length of the rectangle is . Find the area of the shaded region.

Use the value for , and do not round your answer. Be sure to include the correct unit in your answer.

Answer 1

15.48mm

Explanation:

I'm guessing some stuff because I don't know what the semicircle actually looks like so uh...

Shaded area = rectangle area-semicircle area

rectangle area = 12 * 6 (the height is 6 because it is the radius of the semicircle) = 72

semicircle area= (6^2pi)/2=18pi=56.52

72-56.52

=15.48