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प्रश्न
In the following figure, find the area of the shaded portions
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उत्तर
Area of EFDC = ar (ABCD) − ar (BCE) − ar (AFE)
= (18 × 10) − `1/2` (10 × 8) − `1/2` (6 × 10)
= 180 − 40 − 30 = 110 cm2
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