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 Share with your friends Share 0 Sanjay Kumar Manjhi answered this 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. 0 View Full Answer Monikasharma answered this I think 2nd option is correct but i m not sure for this sorry..!! 0 Divyansh Bisht answered this The correct answer is (b) 0