The sides of the rectangle are 3: 2. The length of the longer side is 12cm. Find the perimeter of the rectangle

Let’s denote one part by “x”. Let’s calculate what it is equal to knowing that 3x is equal to 12 centimeters.

3x = 12;

x = 12/3;

x = 4.

Let’s calculate what the width of the rectangle is.

4 * 2 = 8 cm.

The perimeter of a rectangle is twice the sum of its length and width. Let’s calculate what the perimeter of a rectangle with a length of 12 cm and a width of 8 cm is equal to.

P = 2 * (12 + 8) = 2 * 20 = 40 cm.

Answer: 40 cm.