We use many cuboids in our house. You just stand up from this computer and see them. But if you cannot then just see you cupboard if you have one or just see your room isn't it a cuboid . Cuboids are very common in our world, from boxes to buildings we see them everywhere. You can even fit them inside other cuboids! Some examples are:
A box with a slot cut as a handleCuboids in a cuboid roomBoxes for model trains
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A rectangular prism, a cube, a cuboid are the examples.
A cuboid.
A hexahedron. A parallelepiped, cuboid, quadrilateral frustum are examples.
Cylinder (circular prism) Cube (square prism) Cuboid (rectangle prism)
A cuboid is 100% of a cuboid and 0% of any other shape.