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Sagot :
Answer: ≈257.6106
I do not have a diagram so this may be incorrect, but find the the area of the 16 diameter semicircle, find the area of the 20 diameter semicircle, and then add them both together.
Formula: A=1/2pir^2; Total area=A1+A2
Step one: A1=(1/2)pi(8^2)
A1=1/2pi(64)=32pi
Step two: A2=(1/2)pi(10^2)
A2=1/2pi(100)=50pi
Step three: 50pi+32pi= 82pi≈257.6106
I do not have a diagram so this may be incorrect, but find the the area of the 16 diameter semicircle, find the area of the 20 diameter semicircle, and then add them both together.
Formula: A=1/2pir^2; Total area=A1+A2
Step one: A1=(1/2)pi(8^2)
A1=1/2pi(64)=32pi
Step two: A2=(1/2)pi(10^2)
A2=1/2pi(100)=50pi
Step three: 50pi+32pi= 82pi≈257.6106
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