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- anonymous

Please help
a. Find the surface area of the cube.
b. Find the volume of the cube.
Cube: http://i1255.photobucket.com/albums/hh639/zigzagoon20001/Question3Cube.jpg

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- anonymous

- katieb

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- Callisto

What is the area of one surface of the cube?

- anonymous

I don't know.

- anonymous

think

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- anonymous

I don't know how to do this.

- anonymous

how would you calculate suqare meters of your room?

- anonymous

I don't know, how would you do that?

- anonymous

you would multiply width by length, no?

- anonymous

Okay, and how do I figure out the width or the length? It only says "4x-5" underneath the cube.

- anonymous

|dw:1354440210511:dw|
right?

- anonymous

I don't know if that's right. If you say so. I don't know that much about this topic. So what would the width or length be in this situation?

- anonymous

to figure an area of a rectangular region, you multiply it's length by it's width

- anonymous

Well myko just told me how, but I do not know the width or length is of this rectangle.

- anonymous

so , imagine you have a square (length = width)
|dw:1354440386801:dw|

- anonymous

I'm sorry, this is all very confusing to me.

- anonymous

this is, actualy, one of the faces of the cube. To find total surface area, just count how many faces it has.

- anonymous

I'm assuming it has 6 faces, right?

- anonymous

you right, so total surface area will be 6 times the area of one of the faces

- anonymous

in your case:
|dw:1354440579144:dw|

- anonymous

got it?

- skullpatrol

Still confused?

- skullpatrol

The definition of area reads:
area: The area of a region is the number of square units it contains.

- skullpatrol

In this question you can not calculate a numerical answer
because you don't know what the value of x is.
You can only give the equations:
surface area = 6(4x-5)^2
volume = (4x-5)^3

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