Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Volume(3D) |
Grade: 1400-a Lesson: S3-L7 |
Explanation: Hello Students, time to learn examples. Let us take turns and read each example. Explain each step. Pay special attention to steps and pictures and communicate in your own words. |
Examples:
What’s the volume of a 3D shape with a side length of 5m, height of 6m, the radius is 3m, and width of 7m? Use value π is 3.14.
Step 1a
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The first 3D shape is a sphere. To calculate the volume of a sphere, use the formula: \$113.04(m)^3\$ |
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Explanation: Finding the volume of a sphere is a simple task when the formula is used: \$V = 113.04(m)^3, volume = 4/3 π(r)^3\$ |
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Step 2a
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The next 3D shape is a cone. To calculate the volume of a cone, use the formula: \$56.52(m)^3\$ |
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Explanation: Finding the volume of a cone is a simple task when the formula is used: \$V = 56.52 (m)^3, volume = 1/3 π(r)^2*h\$ |
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Step 3a
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The third 3D shape is a rectangular prism. To calculate the volume of a shape, use the formula: \$210(m)^3\$ |
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Explanation: Finding the volume of a rectangular prism is a simple task when the formula is used: \$V = 210(m)^3, Volume(v) = length * width * height\$ |
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