The length of the rectangle is 6 cm. The width is 1/3 of its length. Calculate the perimeter of this rectangle.

To find the fraction of a number, you need to multiply the given number by the numerator and divide by the denominator of the desired fraction.

The perimeter of a rectangle is the sum of all its sides.

1) Find the width of the rectangle:

6 * 1: 3 = 2 (cm) – the width of the rectangle.

2) Find the perimeter of the rectangle:

2 + 2 + 6 + 6 = 16 (cm) – the perimeter of the rectangle.

Answer: The perimeter of the rectangle is 16 cm.