Question

What is the area of the sector that is NOT shaded?

a. 80 pi units2
b. 16 pi units2
c. 20 pi units2
d. 8 pi units2


PLEASE HURRY!! I HAVE LIMITED TIME!! :)

Answer 1

area of the shaded sector

= 72°/360°π(10)²

= 0.2×100π. sq. units

=20π sq. units

area of the not shaded region=π(10)²-20π

= (100-20)π = 80π sq. units