In △ABC, E is mid-point of side AB and EBCD is a parallelogram. If the area of △ABC is 80cm2, find the area of parallelogram EBCD.
A
80cm2
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B
70cm2
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C
60cm2
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D
40cm2
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Solution
The correct option is A80cm2 ABC is a △ and E is the midpoint of AB. ∴AE=EB=AB2(1) Let EC be the altitude from C to AB ∴ Area of △ABC=12×AB×EC =EB×EC (from (1)) =80cm2 Now, Area of parallelogram =EB×EC =80cm2