Answer:
Step-by-step explanation:
If a Rectangle has a perimeter of 40 units, then we can write that formula and find the a formula for the coordinates:
Therefore we can say:
Technically when 
in this rectangle is a square, a degenerate square.
To round to the nearest tenth place you are going to round the last two digits of that, you should get 519.7
Answer:
The last one, I think
Step-by-step explanation:
Answer:
shaded area = 538 mi²
Step-by-step explanation:
area of bottom rectangle = 14 * 8 = 112 mi²
area of middle rectangle = 7 * ( 5 + 8 + 30) = 301 mi²
area of the upper rectangle = 5 * 25 = 125 mi²
Total shaded area = 125 mi² + 301 mi² + 112 mi²
= 538 mi²
