## zigzagoon2000 2 years ago 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

1. Callisto

What is the area of one surface of the cube?

2. zigzagoon2000

I don't know.

3. myko

think

4. zigzagoon2000

I don't know how to do this.

5. myko

how would you calculate suqare meters of your room?

6. zigzagoon2000

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

7. myko

you would multiply width by length, no?

8. zigzagoon2000

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

9. myko

|dw:1354440210511:dw| right?

10. zigzagoon2000

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?

11. myko

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

12. zigzagoon2000

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

13. myko

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

14. zigzagoon2000

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

15. myko

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

16. zigzagoon2000

I'm assuming it has 6 faces, right?

17. myko

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

18. myko

19. myko

got it?

20. skullpatrol

Still confused?

21. skullpatrol

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

22. 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