What is the surface area of a 7cm cube?

Question

16485 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-06-24T20:46:44

#294# square centimeters

We know that a cube has #6# faces of equal area. What will the area of one face be?

In a cube, the length and width are the same, so both sides will be #7# cm, yielding an area of #49# square centimeters.

This is the area of one side, so to find the surface area, we multiply this by the number of sides (#6#). We get

#49 cm^2*6=294\ cm^2#

The surface area of a #7# cm cube will be #294\ cm^2#.

Hope this helps!

Answer 2 · 2018-06-24T20:48:21

#294\ cm^2#

A cube has 6 identical square faces & the surface area of a cube having each side #a=7cm#

#=6(\text{area of square with side } a)#

#=6a^2#

#=6\cdot 7^2#

#=294\ cm^2#