Answer:
The length of the other side is 9 ft
Explanation:
To solve this we first have to know the formula to calculate the area of a rectangle
a = area = 45 ft²
l = length
w = width = 5 ft
a = l * w
because we want to calculate the length, we will have to clear the l
a = l * w
l = a / w
now we replace with the known values
l = 45 ft² / 5 ft
l = 9 ft
The length of the other side is 9 ft