Maths-
General
Easy

Question

A box is in the form of a cube with an edge of 7 cm long. Calculate the total length of the edges

  1. 24
  2. 64
  3. 44
  4. 84

Hint:

There are 6 faces and 12 edges of cube. And all edges are of equal length.

The correct answer is: 84


    Given :- edge length= 7 cm
    According to question,
    Let edge length of a cube = l
    Since, cube has 12 edges.
    So, sum of length of edges =12 l
    Hence formula for the sum of edge length = (12 cross times one edge length)

    = 12(7)

    = 84
    Therefore, the correct option is d) 84

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