Find the side of the rectangle if its area is 72cm2, and the other side is 9cm. find the perimeter of the rectangle.

The area of the rectangle (S) is determined by the formula:

S = a * b, where a is the length of the rectangle, b is its width.

With the known area and one of the sides of the rectangle, you can calculate the second side by the formula:

a = S: b,

b = S: a.

Find the side of the rectangle if S = 72 cm ^ 2, b = 9 cm:

a = 72: 9 = 8 cm.

The perimeter of a rectangle (P) is equal to the sum of the lengths of all its sides:

P = a + b + a + b = 2a + 2b = 2 * (a + b).

Let’s define the perimeter of a given rectangle:

P = 2 * (8 + 9) = 2 * 17 = 34 cm.

Answer: 9 cm; 34 cm.