The perimeter of the rectangle is 120cm. What sides can this rectangle have?

Remember that a rectangle always has equal opposite sides, and remember that any cube is a rectangle. Well, the perimeter of the rectangle is equal to the sum of all its sides. Perimeter formula = 2 * (a + b) = 120;
(a + b) = 120: 2; a + b = 60. Now we decompose 60 into multipliers, which will be the sides: 60 = 10 + 50; 60 = 20 + 40; 60 = 30 + 30 and so on. Thus, the sides of the rectangle are: 10.10.50.50 cm or 20.20.40.40 cm or 30.30.30.30 cm