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Question

ABCD is a parallelogram and E and F are mid-points of AD and BC respectively. P is any point on AB. If area of ΔEDF = 16 cm2, then find the area of ( ΔAEP+ ΔBFP)


A
16 cm2
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B
20cm2
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C
26 cm2
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D
30 cm2
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Solution

The correct option is A 16 cm2

Given that area of ΔDEF = 16 cm2

ΔDEF and parallelogram DEFC are on same bases (DE) and same parallels (DE and CF)
So, ar (||gm DEFC)= 2 × ar of ΔDEF = 32 cm2

As E and F are mid points of AD and BC,
ar (||gm DEFC) = ar(||gm EABF)= 32 cm2

Again triangle PEF and parallelogram EABF are on same bases (EF) and same parallels.

So, ar(ΔPEF)=12×ar(||gmEABF) =16 cm2

Now,
ar (ΔAEP) + ar (ΔPFB) + ar (PEF) = ar(||gm EABF)
ar (ΔAEP) + ar (ΔPFB) + 16 = 32

ar (ΔAEP) + ar (ΔPFB) = 16 cm2


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