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Mathematics 7 Online
OpenStudy (alex6799):

1. Consider eight,eight-cubic centimeter (8 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a ratio. Be sure to show all calculations leading to an answer.

OpenStudy (welshfella):

length of the side of each individual cube = cube root of 8 = 2 cms. what is the surface area of each cube?

OpenStudy (welshfella):

there are 6 faces and each face has area 2*2 cm2

OpenStudy (alex6799):

that's it?

OpenStudy (welshfella):

Noo I am guiding you to the answer I'm showing you how to work out the surface area of one cube.

OpenStudy (alex6799):

oh

OpenStudy (welshfella):

one of the 8 cm3 cubes has surface area 6 * 2*2 = ?

OpenStudy (welshfella):

I'm sure you can work that out...

OpenStudy (welshfella):

I'd like you to get involved in the solution - that way you will learn more.

OpenStudy (welshfella):

there are 6 faces on a cube and each face as area 2*2 so total surface area = 6 times 2 times 2 square centimeterst

OpenStudy (alex6799):

so it would be 24?

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