So the formula to workout the area of a rectangle is height X width
so 11/3 x 5/8
which is 55/24 ft if they want a mixed number then... 2 
hope this helps
Joe would be paying $700 in 5 years time.
Explanation:
($2,000)(0.07/year)(5 years)
= ($2,000)(0.07)(5)
= $700