Blue region

Find the area of the blue region on the picture.

Correct answer:

S =  7.96

Step-by-step explanation:

a=5 b=8 c=2  a = 42 π r1 = 2π r1 b = 42 π r2 = 2π r2  r1=π2 a=3.14162 53.1831 r2=π2 b=3.14162 85.093 t=r2r1=5.0933.18311.9099 t = c ???  S=41 π r12=41 3.1416 3.18312=7.96



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You need to know the following knowledge to solve this word math problem:

planimetrics

 
We encourage you to watch this tutorial video on this math problem: video1

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