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Question

In an isosceles right triangle, the length of the hypotenuse is 10 cm. Then the perimeter of the triangle is


A
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B
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C
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D
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Solution

The correct option is C


In ΔABC,
By Pythagoras theorem
AB2+BC2=AC2
x2+x2=102
x2=1002=50
x=52 cm
Hence, the perimeter is 52+52+10=10(2+1) cm


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