Answer:
16 units
Step-by-step explanation:
this rectangle is nice to us. its side lines are clearly parallel to the coordinate axis.
A starts at x=1, y=2.
B is straight above with x=1, y=7
so, how long is AB ? it is just the difference in y direction 7-2=5.
C is then on the same y height as B, and is just a bit to the right (bigger x value) with x=4, y=7
what is the distance BC ? just the difference in x 4-1=3.
since it is a rectangle, the other 2 sides are a "copy" of these first 2 sides.
so, another 5 and 3.
therefore, the perimeter of the rectangle is
2×5 + 2×3 = 16 units of the coordinate system.
