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Hello! This is the problem I am having a lot of problem with.I may warn you there is some rubbish so ignore it.

Hello! This is the problem I am having a lot of problem with.I may warn you there-example-1
User Bitwelder
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1 Answer

8 votes
8 votes

Surface Area of a Cube

A cube has 6 faces or surfaces, all of them have the same size and therefore, the same area.

The surface area of one of the faces is the area of a square of side length 9 ft:


A=(9\text{ ft})^2=81\text{ }ft^2

The total surface area is 6 times this area, thus:


\begin{gathered} SA=6\cdot81\text{ }ft^2 \\ SA=486\text{ }ft^2 \end{gathered}

User Fabio Dalla Libera
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