the perimeter of one face of a cube is 40 cm. find the sum of lenghts of its edges
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Let the side of cube be 'x'cm
4x=40
x=10cm
Number of edges in cube=12
Sum of length of the edges=12x=12×10=120cm
4x=40
x=10cm
Number of edges in cube=12
Sum of length of the edges=12x=12×10=120cm
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