Question

the perimeter of one face of a cube is 20cm . find the total surface area of cube ​

Answer 1

Answer:

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Answer 2

Answer:

WE KNOW,

PERIMETER OF FACE OF CUBE=20 CM

PERIMETER OF CUBE = 4a

A.T.Q

4a = 20

a = 20/4

a = 5

NOW,

TOTAL SURFACE AREA OF CUBE = $6a^{2}$

6×$5^{2}$

=> 150 $cm^{2}$