One side of the rectangle is 2 cm and the other is 8 cm longer, find the perimeter.

One side of the rectangle is 2 cm, the other is 8 cm longer, we find the length of the other side:

2 + 8 = 10.

As a general rule, a rectangle has two pairs of equal sides: a pair (2 pieces) of 2 cm each and, as we found out earlier, a pair of 10 cm.

The perimeter is the sum of the lengths of all sides, which means you need to add all the lengths of the sides of the rectangle, we know them:

2 + 2 + 10 + 10 = 24.

Or we can use the multiplication table:

2 * 2 * 2 * 10 = 24.

Answer: the perimeter of the rectangle is 24 cm.