Question

the hypotenuse of a right angled triangle is 26cm, if the other side 24cm. find the length of the third side​

Answer 1

You need Pythagorean theorem for this.

a² + b² = c², where c is the hypotheneus and a and b are the sides of the right triangle.

24² + x² = 26²

x² = 676-576

x = ±√100

x = 10 (-10 is rejected because length of triangle cannot be a negative number)