A rectangular prism is a three-dimensional shape with six rectangular faces. It has length, width, and height, making it a type of cuboid. Each pair of opposite faces is equal in size, and the angles between the faces are right angles. Rectangular prisms can be found in everyday objects, such as boxes, bricks, and books. The volume of a rectangular prism can be calculated by multiplying its length, width, and height together. This shape is commonly used in architecture and design due to its straightforward structure and efficient use of space.