A coordinate grid is used on the plan of a new housing development. fibre optic cable is being laid with a micro-tunnelling machine. THE CABLE WILL LINK POINTS BEGINNING at A and ending at D . if one unit on the grid represents 2.5m, how much cable is required?

Question

A coordinate grid is used on the plan of a new housing development. fibre optic cable is being laid with a micro-tunnelling machine. THE CABLE WILL LINK POINTS BEGINNING at A and ending at D . if one unit on the grid represents 2.5m, how much cable is required? 
pls help me

MathMate · Answer

I wish I could see your figure that shows the grid and the points labelled A and D.

This is a good chance for you to describe what you see in the figure. For example:

"It is a rectangular grid of 12 x 14.
Point A is at the intersection of the fourth grid line from the bottom and second from the left...."