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Question

Legs (sides other than the hypotenuse) of a right triangle are of lengths 16 cm and 8 cm. Find the length of the side of the largest square that can be inscribed in the triangle.

A
163cm
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B
203cm
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C
143cm
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D
223cm
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Solution

The correct option is A 163cm
Let ABC be a right triangle right angles at B with AB=16 cm and BC=8 cm. Then, the largest square BRSP which can be inscribed in this triangle will be as shown in figure.
Let PB=x cm. So, AP=(16x) cm.
In APS and ABC,
A=A
APS=ABC (Each 90o)
So, APSABC (AA similarly)
Therefore, APAB=PSBC
or 16x16=x8
or 1288x=16x
or x=12824=163
Thus, the side of the required square is of length 163cm
232678_233921_ans.png

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