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Mathematics 11 Online
OpenStudy (anonymous):

What is the surface area of a cube with a side length of 18 meters?

OpenStudy (anonymous):

@LegendarySadist

OpenStudy (ddcamp):

How many faces does a cube have?

OpenStudy (anonymous):

6.....

OpenStudy (ddcamp):

OK. If you add up the area of each face, you'll have the total surface area, right?

OpenStudy (anonymous):

yeah.......

OpenStudy (anonymous):

and that's 108

OpenStudy (ddcamp):

Not quite

OpenStudy (ddcamp):

So there are 6 faces, and each one is a square with side length 18. What's the area of just one of the squares?

OpenStudy (anonymous):

hmm? :/

OpenStudy (ddcamp):

This is the cube we have, right? |dw:1432688909158:dw|

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