A rectangle and a square have the same perimeter. The side of the square is 14 cm. The width of the rectangle is 7 cm.

A rectangle and a square have the same perimeter. The side of the square is 14 cm. The width of the rectangle is 7 cm. Find the length?

Perimeter of the square = 14 * 4 (since all sides are equal) = 56
x – the length of the rectangle
Perimeter of the rectangle = (7 * 2) + (x * 2) = 56 (since it is equal to the perimeter of the square)
Let’s solve the equation:
7 * 2 + 2x = 56
14 + 2x = 56
2x = 42
x = 21
Answer: 21 cm