The rib of the cube is 9dm. Find the volume of the cube and the total surface area.
| January 16, 2021 | education
A cube is a regular polyhedron whose edges are equal, and each face is represented by a square.
The volume of such a figure is calculated by the formula:
V = a³, we find its value if the edge = 9 dm:
V = 9 * 9 * 9 = 729 dm³.
The total surface area of a cube is determined by the formula:
S = 6a² = 6 * 9² = 6 * 81 = 486 dm².
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