Question

Check whether the following measures (in cm) can be the sides of a right-angled triangle or not.

1.5, 3.6, 3.9

Answer 1

For a right-angled triangle, the sum of squares of two shorter sides must be equal to the square of the third side.

Now, 1.5² + 3.6² = 2.25 + 12.96 = 15.21

Also, (3.9)² = 15.21

⇒ (1.5)² + (3.6)² = (3.9)²

Hence, the given sides form right angled triangle.