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Question

Find the perimeter of an isosceles right triangle having an area of 100 cm2.

A
20(2+1)
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B
20(21)
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C
2(2+1)
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D
10(2+1)
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Solution

The correct option is A 20(2+1)
Area =12×a×a=a22=100

a=102

Perimeter=2a+a2
=202+10×(2)2
=20(2+1)

991260_1049274_ans_6c3ef321104348c3801070c5d08a691d.png

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