The perimeter of the rectangle is 48cm. One side is 15cm. What is the other side equal to?

It is known from the condition that the perimeter of the rectangle is 48 cm. One side is 15 cm. You need to find what the other side is equal to.

Let’s remember the definition of the perimeter and the formula for finding the perimeter of a rectangle.

The perimeter of a geometric figure in mathematics is the sum of the lengths of all its sides.

The perimeter of a rectangle can be calculated using the formula.

P = 2 (a + b);

We borrow the perimeter, as well as the length of one of the sides. Let’s substitute them in the formula and find the second side of the rectangle.

2 (15 + b) = 48;

15 + b = 24;

b = 24-15;

b = 9 cm.