# The perimeter of the rectangle is 7.8cm and one of its sides is 1.3cm larger than the other. Find the sides of the triangle.

July 22, 2021 | education

| First you need to find the sum of the two sides of the rectangle.

This requires dividing the perimeter value by 2.

We get:

7.8 / 2 = 3.9 cm.

Let’s write one of the sides of the rectangle equal to x.

Since the second side is 1.3 cm longer than the first, then its length will be: x + 1.3 cm.

We get the equation for the sum of the sides.

x + x + 1.3 = 3.9.

2 * x = 3.9 – 1.3.

2 * x = 2.6.

x = 2.6 / 2 = 1.3 cm (first side).

x + 1.3 = 1.3 + 1.3 = 2.6 cm (second side).

Answer: The sides of the rectangle are 1.3 and 2.6 cm.

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