The perimeter of an isosceles right angled triangle having A as each of the equal sides is :
  • (1+√2)a
  • (2+√2)a
  • 3a
  • (3+√2)a

Dear Student,



Right angled isosceles triangle having "a" as each of equal side.So, the hypotenuse=a2+a2 = a2        (By Pythagoras Theorem)So, the perimeter; Sum of all three side=a+a+a2=2a+a2=a(2+2)So, 2nd option is the correct one.Regards.

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I think 2nd option is correct but i m not sure for this sorry..!!
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The correct answer is (b)

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