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Question

The hypotenuse of a right triangle is 6 m more than the twice of the shortest side. If the third side is 2m less than the hypotenuse, find the sides of the triangle.

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Solution

Let the shortest side be x.
Then hypotenuse =2x+6
Third side =2x+62=2x+4
According to Pythagoras theorem,
AB2=CB2+AC2
(2x+6)2=x2+(2x+4)2
4x2+24x+36=x2+4x2+16x+16
x28x20=0
(x10)(x+2)=0
x10=0orx+2=0
x=10 or x=2
x cannot be negative.
So shortest side is 10m.

Hypotenuse =2x+6
=2×10+6
=20+6
=26m
Third side =2x+4
==2×10+4
=20+4
=24m

Hence the shortest side, hypotenuse and third side of the triangle are 10m,26m and 24m respectively.

1026439_1009467_ans_844334930daf49c6a8f31909d33cad06.png

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