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

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.