Calculate the perimeter of the rectangle, which is 4 cm wide and 5 times longer.

1. First, calculate the length of the rectangle, which is 5 times the width:

4 x 5 = 20 (cm).

2. Now you can calculate the perimeter of the declared rectangle using the formula:

P = 2 x A + 2 x B,

where A is the length of the rectangle, B is its width.

P = 2 x 20 + 2 x 4;

P = 88 (cm).

Answer: the perimeter of the declared rectangle is 88 cm.



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