If two lines are parallel, it is determined that both of their slopes are the same. In this case, they are and one slope is given so, the other is the same.
That's pretty hard to show through a site like this. I recommend going to this site to learn how to construct: http://www.mathopenref.com/constorthocenter.html
The answer is 168 because 11 x 6 is 66 but on a triangle it would be half of that cause the formula of a triangle a = bh/2 so thats 33 and since theres 4 sides you would do 33 x 4 = 132 then 6 x 6 cause the base of the triangle = 36 and 132 plus 36 is 168
add the three million and then look at the second number you need to add to it and it is seven hundred and two thousand so it should be 702 instead of 720.
