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Given area of trapezium 24.5 cm²
1/2 x h x sum of parallel sides = 24.5
1/2 x AB x 10+4 = 24.5
1/2 x AB x 14 = 24.5
AB = 24.5 x 2 x 1/14
AB = 3.5 cm
Now area of shaded region =
Area of trapezium - area of quadrant
= 24.5 - 1/4 x π r²
= 24.5 - 1/4 x 22/7 x 3.5²
= 24.5 - 9.625
= 14.875 cm²
Ans 14.875 cm²
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