Question

Find the total surface area of a cube having each of its side equal to 3.5 cm.

Answer 1

TSA of a cube = 6$a^2$
Side of the cube = 3.5 cm

=> TSA of the cube = 6 ( <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ${3.5}^2$) = 6 (12.25) = 73.5 <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ${cm}^2$