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.
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