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