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Basic geometry and measurement

Unit 6: Lesson 2

Volume of rectangular prisms

Measuring volume as area times length

To calculate the volume of a rectangular prism, you can multiply the dimensions (width, depth, and height) together in any order. For example, a prism that is 2cm wide, 3cm deep, and 4cm tall has a volume of 24 cubic centimeters. Created by Sal Khan.

Want to join the conversation?

• Can anyone explain how to tell the difference between height, length, and depth in a 3D shape? Does it depend on what side you're looking at the shape from, or perhaps which sides are longer?
• Height is a line straight down and length is the aline straight across
• Can't height also be called depth?
(1 vote)
• I guess? But it would be kinda depends how you look at the cube.
• how do you measure oval
• Can height be depth.. orrr?
• yes if you go down not up I guess
• How can you find the volume of a Decagon
• You can't. A decagon is a 2D shape, and you can only get the volume of things that are 3D
• hay I wanna know more about measuring volumes.