Question

if the length of a cube is 2cm then find the surface area of the cube ?​

Answer 1

Answer:

24 cm²

Step-by-step explanation:

Area of square = side × side

So, surface area of one square in cube = 2 cm × 2 cm

= 4 cm²

No. of squares in cube = 6

Therefore, surface area of cube = 4 cm² × 6 = 24 cm²

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Answer 2

Given:

Length of a cube is 2 cm

To Find:

Surface area of the cube

Solution:

A cube consists of 6 faces.

The area of each face = side x side

So, the total surface area of a cube = 6 x side x side

Let a be the length of the given cube

∴ Surface area of a cube = 6a²

a = 2 cm (Given)

⇒ Surface area of cube = 6 x 2² = (6 x 4) = 24 cm²

Hence, the surface area of the given cube is 24cm².