The perimeter of a rectangular field is 60ft and its width is 20ft find the area of this field

Perimeter of rectangle = 2 (length + width)

given: Perimeter=60 ft and width=20 ft

plugging these values in the formula,

60=2 (20 + length)

dividing both sides by 2

30=20+length

length = 30-20=10

length is 10 feet

width is 20 feet

Area of rectangle is given by:

Area = l*w

Area = 10 * 20 = 200 square feet

Answer : Area of rectangle is 200 square feet.