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OpenStudy (anonymous):
calculate the circumference and area of the shaded! https://pbs.twimg.com/media/BF31n79CIAAEiEU.png:large
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OpenStudy (anonymous):
circumference = 40+40+ 2*pi* 10 because radius of semicircle is 10 and two semi circles make full circle so we take 2* pi* radius only....
OpenStudy (anonymous):
area= area of rectangle (40*20) - area of circle( pi*10*10) hope u understood..
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