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Volume and surface area

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Volume introMeasuring volume with unit cubesMeasuring volume as area times lengthVolume of a rectangular prism Volume of triangular prism & cubeVolume formula intuitionVolume of rectangular prisms reviewConversion between metric units
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Volume with fractional cubesVolume of a rectangular prism: fractional dimensionsVolume of a rectangular prism: word problem
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Intro to nets of polyhedraSurface area using a net: triangular prismSurface area of a box (cuboid)Surface area of a box using netsSurface area using a net: rectangular prismSurface area review
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Cylinder volume & surface areaVolume of a coneVolume of a sphereVolume formulas review
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Density word problem: blimp
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Slicing a rectangular pyramidWays to cross-section a cubeRotating 2D shapes in 3D
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Koch snowflake fractalArea of Koch snowflake (1 of 2)Area of Koch snowflake (2 of 2)
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Heron's formulaProof of Heron's formula (1 of 2)Proof of Heron's formula (2 of 2)
Test your understanding of Volume and surface area with these 13 questions.

About this unit

Volume and surface area help us measure the size of 3D objects. We’ll start with the volume and surface area of rectangular prisms. From there, we’ll tackle trickier objects, such as cones and spheres.