Please answer with clear instructions so that i can apply this to other questions

Length=14

Width=5

Step-by-step explanation:

Perimeter is the distance around the object. In this case it's 38. Pretend you're walking along the lines. You will add up all the sides as you walk along them.

(x+6)+(x-3)+(x+6)+(x-3)=38

4x+6=38

4x=32

x=8

Now that you have x, plug it in to the sides to get the answers

Length = x+6 = 8+6=14

Width= x-3 = 8-3 = 5

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.