The difference between the perimeter of the shaded and unshaded part is 6cm.Find the area of the shaded part.
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Question
Answer
sushi88
Let the unknown side on the right (on BC) of the shaded figure be u
15+10+u = 10+15-u+6
2u =6 => u = 3
Area of shaded part = Area of trapezium = 1/2 (15+3) x 10 =90cm2