The width of the rectangle is 3 times less than its length. Find the area and perimeter if its length is 12cm.

We calculate what the width of the rectangle is, knowing that it is 3 times less than the length equal to 12 cm.

12/3 = 4 cm.

Let’s calculate what the area of the rectangle is. S = a * b, where a is the length and b is the width.

S = 4 * 12 = 48 cm2.

Let’s calculate what the perimeter of the rectangle is. P = 2 * (a + b), where a – length, b – width.

P = 2 * (12 + 4) = 2 * 16 = 32 cm.

Answer: 32 cm. 48 cm2