# The length of the side of the square is 8 dm, and the length of the side of the rectangle is 9 dm

August 25, 2021 | education

| **The length of the side of the square is 8 dm, and the length of the side of the rectangle is 9 dm. find the area of a rectangle with the same perimeter as a square.**

Find the perimeter P of the square and rectangle:

P = 4 * 8 = 32 dm.

Let’s find how many decimeters are two widths of the rectangle:

32 – 9 – 9 = 14 dm.

Let’s find how much one width is:

14: 2 = 7 dm.

Find the area S of the rectangle:

S = 9 * 7 = 63 dm2

Answer: 63 dm2.

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