Question

the perimeter of 1 face of a cube is 20 cm find its surface area​

Answer 1

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Answer 2

Let a be the side of the given square.

Perimeter of 1 side of the cube= 20cm

4a=20

a= 20/4

a= 5cm

TOTAL SURFACE AREA OF THE CUBE= 6a²

                                                             = 6×5×5

                                                             = 30×5= 150cm²

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