The width of the rectangle is 42 cm, which is 3/14 of its perimeter. Find the length of this rectangle.

Before you can determine the length of this rectangle, you need to find its perimeter.

Since we know that the width is 3/14 of its value, we divide the width of the rectangle by the known part.

We get:

42 / 3/14 = 42 * 14/3 = 14 * 14 = 196 cm.

Find the sum of the sides of the rectangle.

To do this, divide the resulting perimeter by 2.

We get:

196/2 = 98 cm.

Find the length of the rectangle.

To do this, subtract the width value from the resulting sum of the sides.

Will:

98 – 42 = 56 cm.

Answer:

Length 56 cm.