The perimeter of one face of a cube is 40 cm. Find the sum of lengths of its edges.
Perimeter(4a) = 40cm
Therefore,4a=40cm
a= 40/4cm
a=10cm
No. of edges in a cube=12
Therefore, sum of edges = 10x12=120cm
Therefore,4a=40cm
a= 40/4cm
a=10cm
No. of edges in a cube=12
Therefore, sum of edges = 10x12=120cm