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A cube is a rectangular prism with all sides of the same length. So, volume of a rectangular prism is Length*Breadth*Height = L*B*H But for a cube, L = B = H so volume = L*L*L = L3
Yes. A cube that is 2x2x2 has the same volume as a rectangular prism that is 1x2x4, which is 8. The surface area of the cube is 24 while the surface area of the rectangular prism is 28.
This is clearly lifted from some test paper, omitting the vital diagram. The volume of a rectangular prism is the area of the base multiplied by the height. Same for a cube.
If they have varying heights and widths and lengths. For example: You have a cube and a rectangular prism. The cube has sides that are all 6 cm. long. That cube has a volume of 216 cm Squared. The rectangle has the dimensions 3 by 12 by 6. This rectangular prism has a volume of 216 cm squared, just like the cube, and even though they weren't the same figure, they has the same volume.
A cube is a special kind of rectangular prism.