Question

The surface area of a cube whose edge is 9cm is *

please I did help step by step

Answer 1

Hey!

The surface area of a cube is 6a²

{BECAUSE A CUBE HAS 6 SIDES ON BEHALF OF ITS TSA(total surface area)}

As per the question,

edge(a) = 9cm

area = 6a²

       = 6 x 9²

       = 6 x 81

       = 486 cm²

Hope you understood!