A rectangle with sides 60cm and 15cm was divided in width into 3 identical rectangles

A rectangle with sides 60cm and 15cm was divided in width into 3 identical rectangles, which is equal to the perimeter of each of the rectangles.

Since the rectangle was divided into 3 identical rectangles in width, that is, a side equal to 15 cm is divided into 3 parts, we calculate what each of the three sides is equal to:

15: 3 = 5 (cm).

We will find the perimeter of each of the rectangles, for which we will double the sum of its length and width, provided that the length remains the same, but we have already found the width:

P = 2 (60 + 5) = 130 (cm),

Answer: The perimeter of each of the rectangles is 130 cm.