Question

A rectangular parking lot at the megamall is 7/10 mile long and 1/4 mile wide. How much fencing is needed to enclose the lot?

Answer 1

Greetings!

"A rectangular parking lot at the mega-mall is 7/10 mile long and 1/4 mile wide. How much fencing is needed to enclose the lot?"...

This question is essentially asking to solve for the perimeter. The formula for the perimeter of a rectangle is: 
$2(l+w)$

Input the information we already know:
$2(7/10+1/4)$
Find A common denominator.
$2(14/20+5/20)$
Simplify.
$2(19/20)$
$2/1(19/20)$
$38/20$
Reduce to Lowest Terms.
$=19/10$
or
$=1 9/10$

1 9/10 miles of fencing will be required to enclose the entire lot.

Hope this helps.
-Benjamin