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

Let’s find the value of the perimeter of the rectangle given to us, for this we need to divide the value of the width of the given rectangle by the specified fraction of the width of this rectangle in the perimeter:

42: 3/14 = 168 cm – this is the value of the perimeter of the rectangle given to us;

Let’s find the value of the length of the rectangle given to us, for this we need to divide the value of the perimeter of this rectangle by 2, and subtract the value of the width of the rectangle given to us from the result obtained:

168: 2 – 42 = 42 cm is the length of this rectangle.