The length of the edge of the second cube is 3cm longer than the length of the edge of the first one
| January 5, 2021 | education
The length of the edge of the second cube is 3cm longer than the length of the edge of the first one, find the length of the first cube if the volume of the second cube is 343cm2.
1) Each face of the cube is represented by a square, therefore, all its edges are equal.
The volume of such a figure is calculated by the formula:
V = a³. Let us express the side of the second cube from this formula, provided that V = 343 cm³:
a = ³√343 = 7 cm.
2) The length of the edge of the first cube is 3 cm less, we find this value:
7 – 3 = 4 cm.
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