The area of the rectangle is 36cm2, and the length of one of its sides is 9cm. Calculate the perimeter of this rectangle

The area of the rectangle is 36cm2, and the length of one of its sides is 9cm. Calculate the perimeter of this rectangle The length of the rectangle is 16 cm and the width is 4 times less. Calculate the area of the rectangle.

The area of ​​a rectangle is the product of the rectangle’s length and width.
S = a * b, where a is the length of the rectangle, b is the width of the rectangle.
Substitute the values ​​we know into the formula and find the second side:
36 = 9 * b;
b = 36/9;
b = 4 (cm) – the width of the rectangle.
The perimeter of a rectangle is twice the sum of its length and width; is found by the formula: P = 2 * (a + b).
Let’s calculate the perimeter:
P = 2 * (9 + 4);
P = 26 (cm) – perimeter.

Find the width of the rectangle by decreasing the length of the rectangle by 4 times:
16/4 = 4 (cm).
We calculate the area of ​​the rectangle using the formula: S = a * b, where a is the length of the rectangle, b is the width of the rectangle:
S = 16 * 4 = 64 (cm ^ 2).