Question

The side of a cube is 9 cm long. What is the cube's surface area?

Answer 1

Lateral Surface Area of Cube = 4a²
                                                = 4 * 9 * 9
                                                = 4 * 81
                                                = 324 cm²  

Answer 2

Hi Friend !!


Here's ur ans :-


The side of cube ( a ) = 9cm

T.S.A = 6a²

T.S.A = 6 × 9 × 9 = 486 cm²