Blah Finding a relatinship between volume and a diagonal

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In summary, the relationship between the volume of a cube (V) and the length of the diagonal (d) is V = L^3, where L is equal to the length of any side of the cube. To find the volume for a diagonal length of d = 1.2, use the Pythagorean theorem twice to express L in terms of d and then plug in d = 1.2 for L.
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Stevo11
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Homework Statement



Find the relationship describing the volume (V) of a cube as a function of the length of the diagonal going through the cube (d). evaluate it for a diagonal length of d = 1.2.

I seriously don't know where to start, I'm taking Biology, but I have to take calculus as well and I'm seriously awful at math and have no clue how to start this problem :frown:
 
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Look up the volume of a cube formula.

V=LWH, L=length, W=width, H=height

Now, note that this is a cube. In math when you read or hear words like cube, bells should be going off telling you that this implies that all the sides are going to be of equal distance.

So.

L=W=H

V=L^3

Now for the diagonal going through the cube, I'm going to assume that the line spans the maximum distance that it can inside the cube, from one corner to its opposite diagonal corner. For this distance you can use the Pythagorean theorem twice.

Once for a triangle that is flat on the floor with the longest side as the diagonal from corner to corner of the base of the square. The next will use the longest side of the previous triangle as the base and now the longest side of the new triangle will be the like the 3-D diagonal path of the line inside the cube. (it may take a few seconds to see this)

Call each side L and express the volume in terms of it after using the Pythagorean theorem twice. After you have that then plug in for L=1.2
 

FAQ: Blah Finding a relatinship between volume and a diagonal

How is the relationship between volume and diagonal length determined?

The relationship between volume and diagonal length is determined by using mathematical calculations and geometric principles. Specifically, the volume of a three-dimensional object can be calculated using the formula V = lwh, where l is the length, w is the width, and h is the height. The diagonal length, on the other hand, can be found using the Pythagorean theorem, which states that the square of the diagonal length is equal to the sum of the squares of the other two sides.

Does the relationship between volume and diagonal length apply to all shapes and sizes?

Yes, the relationship between volume and diagonal length applies to all three-dimensional objects, regardless of their shape or size. As long as the object has a defined length, width, and height, the calculation for volume and diagonal length can be applied.

Is there a direct correlation between volume and diagonal length?

No, there is not a direct correlation between volume and diagonal length. While the two measurements are related, they do not have a linear relationship. This means that a change in one measurement does not necessarily result in a proportional change in the other.

How can the relationship between volume and diagonal length be applied in real-world scenarios?

The relationship between volume and diagonal length can be applied in various real-world scenarios, such as calculating the capacity of a storage container, determining the dimensions of a shipping box, or designing a building with specific volume and diagonal length requirements. It can also be used in fields like engineering, architecture, and manufacturing.

Is the relationship between volume and diagonal length affected by the material of the object?

No, the relationship between volume and diagonal length is not affected by the material of the object. As long as the object has defined length, width, and height measurements, the relationship between volume and diagonal length remains the same. However, the actual values for volume and diagonal length may vary depending on the density and properties of the material used.

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