find the area of shaded region
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perimeter = theta/360×2×22/7×r=40
270/360×44/7×r= 40
r=40×7/33-----------------(1)
area = thete/360×22/7×r^2 ---------(2)
put 1 in 2 and bring the answer
270/360×44/7×r= 40
r=40×7/33-----------------(1)
area = thete/360×22/7×r^2 ---------(2)
put 1 in 2 and bring the answer
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