Question

Rex wanted to build fence around a rectangular lot. The lot measures 75 meters by 50 meters. How much fencing materials does he need?

Answer 1

The fencing materials required equals the length of the perimeter of the lot, which is shaped as a rectangle 75 metres long by 50 metres wide.

The perimeter of a rectangle is given by the following:
Perimeter=2 * (length+width)

Answer 2

75+75+50+50=2*(75+50)=2*125=250 m