Answer:

Step-by-step explanation:
Given that

Here


We know that
M dx + N dy=0 will be exact if

So


it means that this is a exact equation.

Noe by integrating above equation

Given that
x= 0 then y= 1

C=4
So the our final equation will be

There will be 6 / 1/3 = 6 x 3 = 18, so 18 sections will be created from the 6 meter board
504 = 2 x 2 x 2 x 3 x 3 x 7