I see my desk's top is similar to a rectangle. My pencil holder is like a cylinder with its top cut off. my desks area is 36 inches and my notebook takes up ⅓ of the space. My cup has a diameter of 5 inches.
My bed has an area of 72 inches. My bookshelf is a rectangle also. it takes up 3 feet of my room. my tent looks like a triangular prism. my chairs volume is 24 square inches.
