Use a 60cm long iron wire to form a rectangle. The ratio of length to width is 3:2. What is the area of the rectangle in cm2?

Use a 60cm long iron wire to form a rectangle. The ratio of length to width is 3:2. What is the area of the rectangle in cm2?

Length: 60 △ 2 × 33 + 2 = 30 × 35 = 18 (CM) width: 60 △ 2 × 23 + 2 = 30 × 25 = 12 (CM) 18 × 12 = 216 (square cm); answer: the area of this rectangle is 216 square cm

The small height is enclosed into a rectangle with 60cm long iron wire. If the length is 4cm more than the width, calculate the area of the enclosed rectangle. If the width of the rectangle is x, the length is cm
So the area is cm

2 (x + X + 4) = 60, x = 13, so width is 13, length is 17, area: 13x17 = 221

Use 60cm long wire to form a rectangle, so that its width is two-thirds of its length. What's the area of the rectangle?
Division formula

60÷2=30
Length 30 (1 + 2 / 3) = 18
Width 18 × 2 / 3 = 12
12×18=216

There is a rectangular plot, which is 5cm in length and 3cm in width. The actual length is 400m. What is the actual area of this rectangular plot?

400m=40000cm
Width: 3 × (40000 △ 5) = 24000cm = 240m
400 × 240 = 96000 (M2) = 9.6 ha
A: the actual area of this rectangle is 9.6 hectares