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Question

Find the length of BD, if CA = 4 cm, AD =2 cm and AB = 6 cm.


A
2 cm
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B
4 cm
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C
3 cm
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D
2 cm
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Solution

The correct option is C 3 cm

Perpendicular from right angle to hypotenuse divides the triangle into two similar triangles and these are similar to the whole triangle also.

CABADB
CAAD=ABDB
42=6DB

BD=3 cm

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