The length of the rectangle is 225 cm, which is 3/8 of its perimeter. Find the area of the rectangle.

We find out the perimeter of this figure. To do this, divide the length of the rectangle into three parts and multiply one such part by the total number of parts, that is, into eight parts:

1) 225 cm / 3 parts * 8 parts = 75 * 8 = 600 cm – becomes the perimeter.

Find out how many centimeters in the perimeter are occupied by two sides of the length of the rectangle:

2) 225 cm + 225 cm = 450 cm.

Then the two sides of the width are:

3) 600 cm – 450 cm = 150 cm.

Rectangle width:

150 cm / 2 = 75 cm.

S = 75 cm * 225 cm = 16875 cm2.