The sum of the lengths of all edges of a rectangular parallelepiped is 28cm. Find the sum of the lengths
| December 10, 2020 | education
The sum of the lengths of all edges of a rectangular parallelepiped is 28cm. Find the sum of the lengths of its three edges having a common vertex.
a parallelepiped has 12 edges, so to find the sum of its 3 edges, you need to find the length of one edge and multiply by 3:
28/12 * 3 = 7
Answer: 7 cm
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