The length of the rectangle is 1 4/20 m, and the width is 3/20 m less than the length. Find the perimeter of the rectangle.

Brief notation of the condition:

a = 1 4/20 m;

b =?, 3/20 m less;

P =? m.

1. Find the width of the rectangle:

1 4/20 – 3/20 = 1 1/20 m.

2. Calculate the perimeter of the rectangle using the formula:

P = (a + b) 2;

P = (1 4/20 + 1 1/20) 2 = 2 5/20 2 = 4 10/20 = 4 1/2 m.

Answer: the width of the rectangle is 4 meters 50 centimeters.