Question

Check if the lengths 18 cm, 24 cm, and 30 cm be the sides of a right-angled triangle?

Answer 1

For any lengths to be sides of a right angled triangle, the sum of the squares of the 2 of them should be equal to the square of the third.

Here,

${18}^2+{24}^2=324+576=900={30}^2$

Since the squares of 18 and 24 add up to the square of 30, these form a Pythagorean triplet

Hence, can be used to represent the three sides of a right-angled triangle.