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Question

In ΔABC, AD is median of ΔABC and BE is median of ΔABD.

If ar(ΔABE)= 15 cm2, then ar(ΔABC) is

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A
60 cm2
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B
50 cm2
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C
40 cm2
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D
30 cm2
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Solution

The correct option is A 60 cm2
The median of any triangle divides the triangle into two triangles of equal area.

BE is the median of triangle ABD
ar(ABD)=2ar(ABE)
ar(ABD)=2×15=30 cm2

Now, AD is the median of triangle ABC
ar(ABC)=2ar(ABD)ar(ABC)=2×30=60 cm2.

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