Question

Perimeter of one face of cube is 40 . find the sum of lenghts of its edge

Answer 1

edge of one face of cube=perimeter/4

=40/4 m= 10m.

Answer 2

heya!

one face of a cube means a square.

if the perimeter of the one face cube is 40 then the perimeter of the square is also 40

therefore side×4=40

→side=40/4

→side=10

verification:-

perimeter of square=side×4

=10×4

=40

hence verified

thus the Length of the cube's edge is 10.

hope this helps..!