Question

the surface area of cube whose edge 3.5 unit is​

Answer 1

Answer:

the side of the cube =3.5cm

lateral surface of the cube 4×side

2

==4×(3.5)

2

=4×12.5

=49cm

2

we get, lateral surface area is 49cm

2

.

Answer 2

Step-by-step explanation:

Each face of a cube is a square.

Let the side of the square face =a cm

Perimeter of the square =4a=24 cm =>a=6 cm

Total surface area of a cube of edge a =6a

2

So, the total surface area of the cube of edge a =6 cm is =6(6)

2

=216cm

2