Question

The sides of a triangle are 15cm,36cm,39cm.verify it is a right angled triangle

Answer 1

Given sides are 15,36,39

So if 15²+36²=39² then it is a right angled triangle..

15²+36²=225+1296=1521

39²=1521

HERE hypotenuse²=side²+side²

so it is a right angled triangle.

Answer 2

See in right angled traingle longest side is hypotenuse so let 39 is the hypotenuse
39²=15²+36²
1521=225+1296
1521=1521
hence proved it's a right angled triangle