Question

A cube has an edge length of 2x.

Write an expression for the total area of the cube please help

Answer 1

how to i get the expression

Answer 2

Total surface area is area of one face times 6
So Area = 6 * (2x)^2 = 6*4x^2 = 24x^2

Answer 3

For example, if the cube had length equal to 1, then 2x = 1, so x = 1/2. Then area of one face is 1*1=1, since there are 6 faces, total area should be 6, using our formula. So plugging in 1/2 into the equation, gives you 6, like it should.

Answer 4

i thought you dont count the bottom face

Answer 5

There's no reason to exclude it.

Answer 6

thanks