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Lesson 3: Decompose figures to find volume

# Volume in unit cubes by decomposing shape

Explore the concept of decomposing complex shapes into simpler ones to calculate volume. Understand volume as additive and how to use multiplication of length, width, and height to find the volume of rectangular prisms. Learn how you can approach the same problem differently.

## Want to join the conversation?

• is there such thing as 4-d?
• Yes, the 4th dimension would be time. 4-D is mainly used in Sciences like Quantum Physics or something that evolves the space-time dimension.
• Can you please post a video on how to find the volume of an irregular rectangular prism? Thanks very much.
• can you multply a diffrent way
• there are many ways to multiply like traditinal and lattice and i prefer lattice, so yes.
• can we do like this , total volume= 2x6x4 =48 ,then 3x2x2=12, so 48-12=36 ?
• Yes good question anyway
• Why isn't there a thing called 5-d, 6-d, and more. Why only 1-d, 2-d, 3-d, and 4-d?
• Hypothetically, it goes up to Infinity-D, but we don't want to overcomplicate it. Our world only goes up to 3-D, so working on trying to figure out 4-D is already a HUGE step in science.
• As an Englishman i have never heard someone say "four hundred five thousandths" and that just sounds very strange to my ears. Here you would say "four hundred and five thousandths". I'm not sure if this is a dialect difference in America or whether this is an actual mistake on the site?
• At least in America, the two phrases have different meanings! The word "and" is like a decimal point, separating the whole number part from the fractional part.
"Four hundred five thousandths" means 0.405.
"Four hundred and five thousandths" means 400.005.

Have a blessed, wonderful day!
• question of the day

what is 1+1? there are no wrong answers!