How do you do perimeter and area of rectangles?

A rectangle has four sides joined by right angles between adjacent sides. There are two pairs of two equal sides, having lengths A and B.

To find the perimeter you add up all the sides, A + A + B + B. This may also be written as 2 x A + 2 X B or 2A +2B or 2 (A+B).

To find the area, you multiply A x B.

If A = B then you have a square with perimeter 4 x A and area A2