thanks!Quote:

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A cuboid has a volume of . The base of the cuboid is square with sides of length x metres. the sureface area of the cuboid is .

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- Dec 27th 2009, 02:35 AMBabyMiloProve surface area of cuboid.Quote:

Quote:

A cuboid has a volume of . The base of the cuboid is square with sides of length x metres. the sureface area of the cuboid is .

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Show that

- Dec 27th 2009, 03:15 AMProve It
- Dec 27th 2009, 03:24 AMe^(i*pi)
Please you can leave the question out of quotation tags please? It makes it easier to follow when replying

What is known:

Code:

square base.

__Spoiler__:

You can now get an expression for the surface area given that it is equal to the sum of it's faces. If you draw a diagram you should be able to find the expression more easily.

__Spoiler__:

You have simultaneous equations to solve now. Eliminate h as it's not being asked for and get the expression for A