Question

The perimeter of one face of a cube is 40 cm.Find the sum of lengths of its edges.

Answer 1

Hii friend,

perimeter of one face of a cube = 4×edge

40 = 4× edge

edge = 40/4

edge of cube = 10 cm

The Length of each edge of cube = 10

Therefore,

The the sum of edge of cube = 12 × 10 = 120 CM


HOPE IT WILL HELP YOU.... :-)

Answer 2

Hey !!!

Here is ur solution :-

perimeter of one face of cube means a perimeter of square : here given one face of a cube is 40

since :- perimeter of square = 4×side = 4a

4a = 40

a = 40/4 = 10cm side of cube

Now .. we all know that
Total surface area if cube = 6×a² (a =side)

so , 6×10²

=> 6×100

=> 600cm² Answer

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Hope it helps you !!!

@Rajukumar111.