Answer:
6.8 ft
Explanation:
You want the height of a tank with a base of 5.5 ft by 4 ft if adding 74.8 ft³ of water fills it halfway.
Volume
The volume of a rectangular prism is given by the formula ...
V = LWH
The filled volume of the tank h feet high is ...
74.8 ft³ = (5.5 ft)(4 ft)(h/2) . . . . . . the filled height is h/2
74.8 ft³/(11 ft²) = h ≈ 6.8 ft . . . . . . divide by the coefficient of h
The height of the tank is 6.8 feet.