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zigzagoon2000
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
What is the area of one surface of the cube?
I don't know how to do this.
how would you calculate suqare meters of your room?
I don't know, how would you do that?
you would multiply width by length, no?
Okay, and how do I figure out the width or the length? It only says "4x-5" underneath the cube.
|dw:1354440210511:dw| right?
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?
to figure an area of a rectangular region, you multiply it's length by it's width
Well myko just told me how, but I do not know the width or length is of this rectangle.
so , imagine you have a square (length = width) |dw:1354440386801:dw|
I'm sorry, this is all very confusing to me.
this is, actualy, one of the faces of the cube. To find total surface area, just count how many faces it has.
I'm assuming it has 6 faces, right?
you right, so total surface area will be 6 times the area of one of the faces
in your case: |dw:1354440579144:dw|
The definition of area reads: area: The area of a region is the number of square units it contains.
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