Question

20 POINTS!!!
Find the area of the shaded regions:

Answer 1

Answer:

Area = 18 cm^2

Step-by-step explanation:

1. We can do 360°/80°=4.5

2. To find area of total circle we can do π*(radius)^2= π*(9)^2=81 π

3. Since the shaded region is 4.5 of the whole circle we can do 81/4.5 to find the area of the shaded region.

4. Area = 18 cm^2

Answer 2

Answer:

56.5486677646 cm²

Step-by-step explanation:

area of whole circle =πr²

area=254.469004941

areaof shaded portion will be 254.469004941÷360×80=56.5486677646

which is approx 56.55 cm².

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