Question

Find the area of the shaded region

Answer 1

Answer:

4 cm

Step-by-step explanation:

Answer 2

Answer:

18pi cm^2

or 56.55 cm^2 to nearest hundredth.

Step-by-step explanation:

Area of the whole circle = pi r^2

= pi * 9^2

= 81pi

By proportion the area of the shaded region

= (80/360) * 81pi

= 18pi cm^2.