Question

The perimeter of one face of a cube is 20 cm. Its total surface area is

Answer 1

Hey there!
Cube has 6 face, It's total surface area is the sum of areas of its 6 faces .

We need to remember that, A cube is the 3D figure ( 3 Dimensional figure ) , and has length, breadth, height.

However, Length, Breadth, Height are equal and can be referred as edge of the cube.


Now, Given that Perimeter of one face of the cube = 20cm.

4 * Edge = Perimeter [ Formula ]

So, 20cm = 4 * Edge

Edge = 20/4 = 5cm.

Surface area of one face = 5² = 25 cm²

A cube has 6 face, So Total surface area = 6 * 25 = 150cm²

Else You can use the formula ,Total surface area = 6(edge)² = 6(5²) = 6*25 = 150cm²

Hope you are helped!

Answer 2

Hey Buddy..

Here is your answer..

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Answer = 150cm²

Explanation is given below in the image.

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I hope my answer helps you ..

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