Question

A congruent side of an isosceles right angled triangle is 7 cm ,Find

its perimetre .​

Answer 1

Step-by-step explanation:

Let the other side of triangle is x cm

Then in isosceles right angle triangle two congruent sides are 7 cm

x square = 7×7+7×7

x square =49+49

x square =198

x=√198

x=7√2

Then perimeter of right angle isosceles triangle =7+7+7 √2=14+7√2

therefore 14+7√2 is the solution

Hope it's help you