Question

which expression represents the total surface area of the cube shown? 6(9·9) find the surface area of the cube. s.a. = m²

Explanation:

Step1: Calculate the area of one face

The area of one face of a cube is \(a\times a\) (where \(a = 9\) m). So, \(9\times9=81\) \(m^{2}\)

Step2: Multiply by the number of faces

A cube has 6 faces. So, the surface area \(S.A.=6\times(9\times9)\)

$$S.A.=6\times81 = 486$$

Answer:

\(486\)