Chapter SH, Problem 21.3APP

To determine

To calculate: Total surface area of a cube.

Answer to Problem 21.3APP

Total surface area is $24{\text{ cm}}^2$ .

Explanation of Solution

Given:

Side of the cube = $2\text{ cm}$

Formula used:

Total surface area of a cube is given by,

Total Surface area = $\text{6}{a}^2$

where a is side.

Calculation:

Total surface area of the cube is calculated as:

  $\begin{array}{c}\text{Total surface area = 6}{a}^2\\ =6{\left(2\text{ cm}\right)}^2\\ =6\cdot 4{\text{ cm}}^2\\ =24\text{ cm}\end{array}$

Conclusion:

Total surface area is $24{\text{ cm}}^2$ .