Answer:
The length is 9 in
Explanation:
This figure sounds like a rectangle of area 72 in^2, width 8 in and length l.
The appropriate formula is A = (l)(w) = (length)(width).
Here we know that the area is 72 in^2 and the width is 8 in.
The most efficient way to calculate the length, l, is to solve the above formula for (l) and then substitute the values for A and w:
A
(l) = ------------
w
72 in^2
Here, (l) = ------------- = 9 in
8 in
The length is 9 in