The answer depends on what information you do have about the object.
Times the height by lenth by with
"One can find a tree shaped photo holder at Zellers or Walmart in the craft department or even at the dollar store. If you are looking to spend a little more money on one, Michaels has a great selection of interesting and unique photo holders."
Find the cube root of 2744.
The cube root is the side of a cube.
One can find more information about menu holders from several places. One can look on Wiki Answer, Reddit, and Wikipedia for information about menu holders.
One can find a list of certificate holders by going on a website such as the List of Active Certificate Holders which provides a list of people that currently hold certificates.
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You can find decorative hose holders at local hardware stores such as home depot and lowes in the gardening or seasonal section.
There is no such thing as a complex cube!
A cube does not have layers.
You need to know how to 'cube ' a number , to calculate Volumes of things. You also need to know how to calculate a 'cubed root' to find the lengths of the sides of a box which is cube shaped . Engineers use special formulas which involve cube and cube root. Most people have no need in their life, to perform these mathematical processes, but school students are taught these processes, so that they will learn how to think and how to develop their brain, and how to solve problems in life.