The length of the rectangle is 2 cm 5 mm, and the width is 5 times less. Calculate the area and perimeter of this rectangle.

Let’s find the width of the rectangle, knowing that it is 5 times less than its length, which is 2 cm 5 mm (25 mm, since 1 cm = 10 mm):

25 mm: 5 = 5 mm.

The area of a rectangle is calculated by multiplying its length by its width:

S = 25mm * 5mm = 125mm2 = 1.25cm2.

The perimeter of a rectangle is calculated by adding the lengths of all its sides:

P = 25 mm + 25 mm + 5 mm + 5 mm = 60 mm = 6 cm.

Answer: S = 125 mm2 = 1.25 cm2; P = 60 mm = 6 cm.