Given a rectangular sheet of paper with dimensions of 100 mm and 400 mm, it is required to determine the area

Given a rectangular sheet of paper with dimensions of 100 mm and 400 mm, it is required to determine the area of a similar rectangle obtained using one cut of this rectangle.

To find the area of a specified sheet of paper, you need to multiply its length by its width:

S = 100 x 400 = 40,000 mm² or 400 cm².

Let’s find the area of a rectangle obtained as a result of one cut of a sheet of paper:

a) cut along the length of the sheet:

S = 100 x (400: 2) = 100 x 200 = 20,000 mm² or 200 cm².

b) cut along the width of the sheet:

S = (100: 2) x 400 = 50 x 400 = 20,000 mm² or 200 cm².

Answer: the area will be 200 cm².