Question

Find the total surface area of cube ,if its diagonal is square root of 12.​

Answer 1

Diagonal of the cube = √12

                           √3 a = √12

Squaring both sides,

                             3a² = 12

                               a² = 4

                        ⇒     a = 2

Total SA of the cube = 6a²

                                   = 6 × 2² = 6 × 4

                                   = 24 unit sq.

Answer 2

Answer:

Step-by-step explanation:

TSA of cube = 6a2

6a2=√12

a2 = √12/6