Question

CW: A sheet measures 20cm by 50cm. How many sheets

required to cover a wall of size 4m and 5 m?
!​

Answer 1

200 sheets are required

Explanation:

We need to calculate the area of both the sheets and the wall

Mathematically,

area of a rectangle = l * b

Area of the sheet = 20 * 50 = 1,000 cm^2

100cm = 1 m

so the area of the wall is 400 by 500 = 200,000 m^2

To know the number of sheets, we now divide the area of the wall by that of the sheet

Mathematically, that will be;

200,000/1,000 = 200 sheets