Question

Please please help! Find the area of the shaded sector. Leave your answer in terms of pi.

Answer 1

The area of a circle is pi * radius squared, thus the area of the circle is 64(pi).  Since we have a sector with 90 degree angle, the area of the sector is exactly 1/4 the area of the entire circle, or 16(pi)

Answer 2

1/4 of the pie is covered. 3/4 is not.