You are designing an aquarium for your new office. The dimensions of the aquarium are restricted as shown in the diagram below. Dimensions:
Height: (w+9)in.
Width: w in.
Length: (49-w)in.

Write a polynomial expression that represents the volume of the aquarium according to the specified dimensions. (I got w(w+9)(49-w))

You need the aquarium to hold 17,640 cubic inches of water. Find the possible dimensions of the aquarium.

Part 1)

Part 2)

We can have the aquarium have a width of 40 inches, a height of 49 inches, and a length of 9 inches.

Or we can have the aquarium have a width of 21 inches, a height of 30 inches, and a length of 28 inches.

Step-by-step explanation:

The dimensions of the aquarium is as follows:

Part 1)

We want to find a polynomial expression that represents the volume of the aquarium according to the specified dimensions.

Since the aquarium is a rectangular prism, the volume will simply be the product of all the dimensions. Hence:

Part 2)

We want to aquarium to hold 17, 640 cubic inches of water. In other words, the volume V should be 17640. Thus:

First, we can distribute the right-hand side:

Distribute:

Distribute:

Simplify:

Now, we can factor. From the first two terms, factor out a -w² and from the second two terms, we can factor out 441:

Grouping:

Zero Product Property:

Solve for each case:

So, we have two possible sets of dimensions.

We can have the aquarium have a width of 40 inches, a height of 49 inches, and a length of 9 inches.

Or we can have the aquarium have a width of 21 inches, a height of 30 inches, and a length of 28 inches.

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)