Sides of triangles are given below. Determine which of them right triangles are. In case of a right triangle, write the length of its hypotenuse.
(i) 7 cm 24 cm 25 cm 
(ii)  3 cm. 8 cm 6 cm
(iii) 50 cm, 80 cm 100 cm
(iv) 13 cm 12 cm 5 cm

Explanation

To determine which of the given triangles are right triangles, we will use the Pythagorean theorem. According to this theorem, in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.

Let's analyze each set of triangle sides step by step.

### Step 1: Check the first triangle (7 cm, 24 cm, 25 cm)

1. Identify the longest side: 25 cm (hypotenuse).
2. Calculate the squares of the sides:
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