Answer:
The fish tank will hold 450 gallons of water.
Explanation:
The fish tank has a rectangular prism shape, therefore it's volume is given by the following expression:
volume = length*width*height
Applying the data from the problem, we have:
volume = 3*4*5
volume = 60 feet³
Since 1 feet³ is equal to 7.5 gallons, then:
volume = 60*7,5 = 450 gallons.
The fish tank will hold 450 gallons of water.