A rectangular hall floor measures 32 m by 18 m. A square courtyard has exactly the same area. By how much does the perimeter of the hall floor exceed the perimeter of the courtyard?

Explanation

1. 01

   Area of the hall = $32 \times 18 = 576$ m², so the courtyard's side = $\sqrt{576} = 24$ m.

2. 02

   Perimeters: hall $2 \times (32 + 18) = 100$ m, courtyard $4 \times 24 = 96$ m.

3. 03

   Difference = $100 - 96 = 4$ m.