The answer depends on the inclination of the intersecting plane. The cross section can be a point, a triangle, a rectangle, a pentagon or a hexagon.
When the 3-d shape is a prism and the cross section is in a plane at right angles to the length of the prism.
No. It is a parallelopiped. And, if it is a right rectangular prism then it is a cuboid.
no
No, a pencil is not a rectangular prism. While it has a cylindrical shape, with a round body and pointed tip, a rectangular prism has six rectangular faces with right angles. A pencil's geometry is more akin to a cylinder than to a prism.
yes, they are different.
A right-angled triangular prism!
When the 3-d shape is a prism and the cross section is in a plane at right angles to the length of the prism.
No. It is a parallelopiped. And, if it is a right rectangular prism then it is a cuboid.
Its volume is its cross-section area times its length.
Area of trapezoidal cross-section x length.
14 if the triangular cross section has a right triangle, 12 otherwise.
no
No, a pencil is not a rectangular prism. While it has a cylindrical shape, with a round body and pointed tip, a rectangular prism has six rectangular faces with right angles. A pencil's geometry is more akin to a cylinder than to a prism.
yes, they are different.
A rectangular prism has six faces; each face has four right angles. There are 24 right angles in all.
The bases of a prism or cylinder are congruent and parallel and they meet the lateral face (cynder) or faces (prism) at right angles. A cross section parallel to the longitudinal axis will, therefore, be a rectangle.
Although there is a separate formula for it, yes, a cube is technically a rectangular prism, and you can use the rectangular prism's formula, because a rectangle is defined as a quadrilateral with four right angles, which a square is.