The rectangle is 7 cm wide and 4 cm longer. Find the perimeter and area of the rectangle

univerkov | April 26, 2021 | education

The rectangle is 7 cm wide and 4 cm longer. Find the perimeter and area of the rectangle. Find the area of a square that has the same perimeter.

1) What is the length of the rectangle? If … more, then you need to add.

7 + 4 = 11 (cm)

2) What is the perimeter of the rectangle P? The perimeter of a rectangle is the sum of the lengths of its sides. P = 2 (a + b).

P = 2 * (7 + 11) = 2 * 18 = 36 (cm)

3) What is the area of the rectangle S? The area of a rectangle is equal to the product of the length of the rectangle by its width. S = ab.

S = 7 * 11 = 77 (cm ^ 2)

4) What is the side of a square that has the same perimeter as a rectangle? All sides of a square are equal, and to find a side, you need to divide the perimeter into 4 equal sides.

36: 4 = 9 (cm)

5) What is the area of the square? The area of a square is equal to the square of its side. S = a * a = a ^ 2.

S = 9 ^ 2 = 81 (cm ^ 2)

Answer. Ppr = 36 cm, Sp = 77 cm ^ 2, Sq = 81 cm ^ 2.

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