Answer :
The sum of the square of the hypotenuse is equal to the sum of the square of the other sides.The length of the hypotenuse of the triangle is l = √14
Pythagoras theorem
The sum of the square of the hypotenuse is equal to the sum of the square of the other sides.
Given that one of the sides is √7, hence;
l^2 = (√7)^2 + (√7)^2
l^2 = 7 + 7
l^2 = 14
l = √14
Hence the length of the hypotenuse of the triangle is l = √14
Learn more on pythagoras theorem here: https://brainly.com/question/343682