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The three Miller boys were calculating the volume of their new fish tank to determine how many gallons of water the tank can hold. Each brother measured a different dimension of the tank. Their measurements were 1 yard in length, 1 foot in width, and 18 inches in height.

1. There are approximately 7.5 gallons per cubic foot. If you want to know how many gallons of water the tank can hold, what unit of measure would you use to calculate the volume of the fish tank? Explain why.

2. Determine how many gallons of water the fish tank can hold. Carefully show your work and include units of measure.

Answer :

Final answer:

To find out how many gallons the fish tank can hold, convert all measurements to feet, calculate the volume in cubic feet, then convert that volume to gallons using the conversion factor of 7.5 gallons per cubic foot. The fish tank's volume is 4.5 ft³, which equates to approximately 33.75 gallons.

Explanation:

Volume Calculation and Conversion to Gallons

The volume of a container is a measurement of the space inside it. Since the Miller boys' fish tank's volume will determine how many gallons of water it can hold, we should calculate its volume in cubic feet because there are approximately 7.5 gallons per cubic foot. We first need to ensure all the measurements are in the same unit. The tank's measurements are given as 1 yard in length (which is 3 feet), 1 foot in width, and 18 inches in height (which is 1.5 feet).

To calculate the volume, multiply length by width by height:
Volume = length×width × height Volume = 3 ft×1 ft ×1.5 ft = 4.5 ft³

Now, using the conversion factor that one cubic foot is approximately 7.5 gallons:

Gallons = Volume× conversion factorGallons = 4.5 ft³ × 7.5 gal/ft³ = 33.75 gallons

Therefore, the fish tank can hold approximately 33.75 gallons of water.

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Rewritten by : Barada

1. Because you know the number of gallons per square foot. You would want to use cubic feet for the measurement of the tank.

2. Convert all dimensions to feet:

1 yard = 3 feet

18 inches = 1.5 feet.

Volume of tank = 3 x 1.5 x 1 = 4.5 cubic feet.

Multiply gallons per cubic foot by cubic feet of tank:

7.5 x 4.5 = 33.75 gallons.