What length of carpet, 50 cm in width, is needed to cover a floor measuring 30 meters by 20 meters?

Explanation

To find the required length of carpet, convert the width from centimeters to meters: 50 cm = 0.5 m. The area of the floor is 30 m × 20 m = 600 m². Using the formula: width × length = area, we get 0.5 × length = 600, so length = 600 ÷ 0.5 = 1200 meters. Therefore, 1200 meters of carpet is needed.