It was a breeze who else agrees.

well, its different for others. we are all at different levels. <3

how do you find volume with cubes

you take base one and mulitiply it by the number its beside. then multiply by the height

i multiplied but i got it wrong

try checking your work before you press the check button

What if the width is not given.

You must know, or be able to figure out the length, width, and height of s shape in the units you are using in order to calculate the approximate Volume of a rectangular solid. If the width is not given, and no way is provided to discover the width, the volume cannot be calculated.

im confuson do u do 1x7x6x3=126x2 ? 🤔😠

For the first problem in practice set 3, you have a shape that looks like two rectangular prisms put right next to each other. The easiest way to find the volume is the split the figure into two rectangular prisms and calculate the volume of each, and then add up those volumes to get the final volume. If we slice the figure vertically, we can end up with a 1 x 7 x 6 rectangular prism and a 4 x 7 x 3 rectangular prism. The formula for volume is length * width * height: V1 = 1 * 7 * 6 = 42 V2 = 4 * 7 * 3 = 84 Adding these up, our total volume is 42 + 84 = 126 cm^3

what if the height isn't given?

If the height of a rectangular prism is not given, divide the prism's volume by it's width and also divide it by it's length in order to find the height of the prism. For example: Volume=30 Length=5 Width=3 Height=? 30/5=6, 6/3=2 so 2 equals your height. Hope that helps.

Main content

Course: 5th grade > Unit 11

Lesson 4: Volume word problems

Volume of rectangular prisms review

Q: how do you find volume with cubes

you take base one and mulitiply it by the number its beside. then multiply by the height

Q: i multiplied but i got it wrong

try checking your work before you press the check button

Q: What if the width is not given.

You must know, or be able to figure out the length, width, and height of s shape in the units you are using in order to calculate the approximate Volume of a rectangular solid. If the width is not given, and no way is provided to discover the width, the volume cannot be calculated.

Q: im confuson do u do 1x7x6x3=126x2 ? 🤔😠

For the first problem in practice set 3, you have a shape that looks like two rectangular prisms put right next to each other. The easiest way to find the volume is the split the figure into two rectangular prisms and calculate the volume of each, and then add up those volumes to get the final volume. If we slice the figure vertically, we can end up with a 1 x 7 x 6 rectangular prism and a 4 x 7 x 3 rectangular prism. The formula for volume is length * width * height: V1 = 1 * 7 * 6 = 42 V2 = 4 * 7 * 3 = 84 Adding these up, our total volume is 42 + 84 = 126 cm^3

Q: what if the height isn't given?

If the height of a rectangular prism is not given, divide the prism's volume by it's width and also divide it by it's length in order to find the height of the prism. For example: Volume=30 Length=5 Width=3 Height=? 30/5=6, 6/3=2 so 2 equals your height. Hope that helps.

Google Classroom

Review the basics of volume and try some practice problems.

What is volume?

Volume is the amount of 3-dimensional space an object occupies. Volume is measured in cubic units.
For example, the rectangular prism below has a volume of

18

cubic units because it is made up of

18

unit cubes.

Want to learn more about the concept of volume? Check out this video.

Finding volume of a rectangular prism

To find the volume of a rectangular prism, we multiply the length of the prism by the width of the prism by the height of the prism.

Volume of rectangular prism =

length \times width \times height

Want to learn more about finding volume of rectangular prisms? Check out this video.

Example 1:

Volume = length \times width \times height

= 3 \times 2 \times 3

= 18 cubic units

Example 2:

Volume = length \times width \times height

= 6 \times 5 \times 7

= 210 cubic units

Practice set 1: Finding volume by multiplying

Problem 1A

What is the volume of the rectangular prism?

{cm}^{3}

Want to try more problems like this? Check out this exercise: Volume 1

Practice set 2: Finding volume with unit cubes

Problem 2A

Unit cube:

What is the volume of the rectangular prism?

unit cubes

Want to try more problems like this? Check out these exercises:
Volume with unit cubes 1
Volume formula intuition

Practice set 3: Challenge items

Problem 3A

The figure below is made up of

2

rectangular prisms.

What is the volume of this figure?

cubic cm

Want to try more problems like this? Check out these exercises:
Decompose figures to find volume
Volume word problems

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McLovin
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It was a breeze who else agrees.
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- Avery Rencher
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  well, its different for others. we are all at different levels. <3
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goku
Posted 6 years ago. Direct link to goku's post “how do you find volume w...”
how do you find volume with cubes
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- I.Davis122
  Posted 5 years ago. Direct link to I.Davis122's post “you take base one and mul...”
  you take base one and mulitiply it by the number its beside. then multiply by the height
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maya czap
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What if the width is not given.
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- ENDER HΛVEN『Free coding advice』
  Posted 5 years ago. Direct link to ENDER HΛVEN『Free coding advice』's post “You must know, or be able...”
  You must know, or be able to figure out the length, width, and height of s shape in the units you are using in order to calculate the approximate Volume of a rectangular solid.
  If the width is not given, and no way is provided to discover the width, the volume cannot be calculated.
  Comment on ENDER HΛVEN『Free coding advice』's post “You must know, or be able...”
  (34 votes)
tc49924
Posted 5 years ago. Direct link to tc49924's post “i multiplied but i got it...”
i multiplied but i got it wrong
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- Kayli
  Posted 5 years ago. Direct link to Kayli's post “try checking your work be...”
  try checking your work before you press the check button
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Cade
Posted 4 years ago. Direct link to Cade's post “what if the height isn't ...”
what if the height isn't given?
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- Colbster_Dog
  Posted 4 years ago. Direct link to Colbster_Dog's post “If the height of a rectan...”
  If the height of a rectangular prism is not given, divide the prism's volume by it's width and also divide it by it's length in order to find the height of the prism. For example:
  Volume=30
  Length=5
  Width=3
  Height=?
  30/5=6, 6/3=2 so 2 equals your height.
  Hope that helps.
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Cale Burkheimer
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There should be like a bell when you finish
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- Michael Silven
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  There is
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k9h2
Posted 3 years ago. Direct link to k9h2's post “im confuson do u do 1x7x6...”
im confuson do u do 1x7x6x3=126x2 ? 🤔😠
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(7 votes)
Answer
- Hecretary Bird
  Posted 3 years ago. Direct link to Hecretary Bird's post “For the first problem in ...”
  For the first problem in practice set 3, you have a shape that looks like two rectangular prisms put right next to each other. The easiest way to find the volume is the split the figure into two rectangular prisms and calculate the volume of each, and then add up those volumes to get the final volume.
  If we slice the figure vertically, we can end up with a 1 x 7 x 6 rectangular prism and a 4 x 7 x 3 rectangular prism. The formula for volume is length * width * height:
  V1 = 1 * 7 * 6 = 42
  V2 = 4 * 7 * 3 = 84
  Adding these up, our total volume is 42 + 84 = 126 cm^3
  Comment on Hecretary Bird's post “For the first problem in ...”
  (14 votes)
2027dalen
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STAY HOME AND STAY SAFE and i also got some right and some wrong
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Madeleine Rostkowski
Posted 6 years ago. Direct link to Madeleine Rostkowski's post “I need help with practice...”
I need help with practice set 3 I do not get it
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nate varg
Posted 6 years ago. Direct link to nate varg's post “just to make sure when yo...”
just to make sure when you have those weird shaped boxes then you cut them in half and add the volumes of each box to get the total volume right?
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