Calculate the perimeter and area of a rectangle with sides of 7cm and 3cm. Calculate the length

Calculate the perimeter and area of a rectangle with sides of 7cm and 3cm. Calculate the length of a side of a square with the same perimeter.

1. Let’s calculate the perimeter of the rectangle. Formula for finding the perimeter of a rectangle: P = 2 * (a + b).

2 * (7 + 3) = 2 * 10 = 20 cm.

2. Let’s calculate the area of the rectangle. Formula for calculating the area of a rectangle: S = a * b.

7 * 3 = 21 cm2

3. Calculate the length of the side of a square with a perimeter of 20 cm. The perimeter of the square is P = 4 * a.

20: 4 = 5 cm.

Answer: the perimeter of the rectangle is 20 cm, the area of the rectangle is 21 cm2, the length of the side of the square is 5 cm.