You cannot make a solid shape with 5 rectangular sides. You can make an open rectangular box, leaving off the last side. You can make a rectangular box (like a cube, but with possibly unequal sides) with 6 rectangles. You can make a rectangular pyramid with one rectangle and four triangles.
No, because you would not get the apex.
To prove that there are only 11 nets there are different ways. Remember there are only 6 sides to make a cube so that does have something to do with it. If you have trouble with this concept then ask your teacher. Asking never hurts. If you have two cubes 6 times 2 is 12 and then minus 1 is 11 so that means 11 possible netsyour welcome
Yes, it can be used to form a Dodecahedron. I don't see how! But cut out a pentagon from a piece of paper. Next make a fold along a line between any 2 corners which are not next to each other. It's no longer 2D. +++ I am not sure what the second sentence is about, but each of the 12 faces of a Dodecahedron is a regular Pentagon. You can also make a pentagonal prism, of course: two pentagonal ends joined by square or rectangular sides. (This is the basis of the prism in the viewfinder of a single-lens reflex - or SLR - camera.)
No. That would make them a prism. * * * * * No. A polygon is a 2-dimensional object ad so cannot be 3-d. Also, there is no need for the shape to become a prism, as suggested by the previous answer.
A larger rectangular prism.
A rectangular prism.
Put all the cubes in a line.
by placing 5 cubes in one row and another in above row.
1 regetangular prism
48/6 = 8 cm
Just one, although the orientation of the prism might vary.
Ignoring rotations, there are 3 distinct solutions.
24 cubes 1x1x1