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

| August 6, 2021 | education

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

In order to find the perimeter, you need to fold all the sides of the rectangle.

In order to find the area, you need to multiply the length by the width.

Let’s calculate the perimeter of the rectangle:

7 + 7 + 3 + 3 = 20 cm.

Let’s calculate the area of the rectangle:

7 * 3 = 21 cm2.

In order to find the length of the side of a square, it is necessary to divide the perimeter by 4, since all its sides are equal.

Find out the length:

20: 4 = 5 cm.

Let’s calculate the area of the square:

5 * 5 = 25 cm2.

Answer: the perimeter of the rectangle is 20 cm, and its area is 21 cm2, the length of the side of the square is 5 cm, and its area is 25 cm2.



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