Answer:
The length of the rectangle is 17.5ft
Explanation:
To solve this we first have to know the formula to calculate the area of a rectangle
a = area = 70ft²
l = length
w = width = 4ft
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 = 70ft² / 4ft
l = 17.5ft
The length of the rectangle is 17.5ft