Find the perimeter of the rectangle if the rectangle is 4cm wide and 2 times longer?

1) Find the length of the rectangle. To do this, multiply its width by a number showing how many times the length is greater than the width. 4 * 2 = 8 (cm); 2) The perimeter (P) of the rectangle is equal to the sum of all its sides or the doubled sum of the length (a) and the width (b) of the rectangle, which can be written in the form of the formula: P = 2 * (a + b); P = 2 * (8 + 4) = 2 * 12 = 24 (cm);
Answer: 24 cm.