let's notice someting on that net, the values provided are cm², namely are area values, so each triangle is 10 cm² in area, and the square in the middle has an area of 25 cm², we can simply just sum all up.
The length of a field is 100 yards and its width is 75 yards. if 1 inch represents 25 yards, what would be the dimensions of the field drawn on a sheet of paper?