Answer: 
Step-by-step explanation:
1. Let's write the following formula for calculate the area of a rectangle:
Where 
is the lenght (the longer side) and 
is the width (the shorter side).
2. You know that the length is 2.5 times as long as the other side, which indicates a multiplication. Then:
3. So, you must substitute into the equation for calculate the area of the rectangle and then you must simplify.
4. Then, you obtain the following expression:
Oh um... well let's see... okay I do NOT know this. SO sorry. Hope you get an answer soon.
12/49
4*3=12
7*7=49
12/49 miles long is being repaved.
This can be tested by taking a mile (in feet for example) and multiplying 5280 ft by 4/7 then by 3/7 to get the same answer as taking 5280 ft times 12/49.
Find the difference then put it over (divide it from) the original.
20 divided by 50. i kinda took an easy way out oops
