Question

(4) Total surface area of a cube is:
(a) 12
(b) 412
(c) 612
(d) 613​

Answer 1

Answer

Surface Area of a Cube Formula

Let us consider, a cube whose length of the edges is 'a'. Now, we know, by the formula of area of a square; Area = Side2 = a2. Therefore, the total surface area of a cube = 6 × (area of each side) = 6 × a2 = 6a2 Square Unit.