Question

find the surface area of the cube using the net. find the area of one square. one square: ? cm² all squares ×6 surface area: □ cm²

Explanation:

Step1: Calculate area of one square

A square's area is side length squared. The side length here is 9 cm. So, area of one square is $9\times9 = 81$ $cm^2$.

Step2: Calculate surface area of cube

A cube has 6 square faces. So, surface area is area of one square multiplied by 6. That is $81\times6 = 486$ $cm^2$.

Answer:

One square: $\boldsymbol{81}$ $cm^2$
Surface area: $\boldsymbol{486}$ $cm^2$