Lesson Example Discussion Quiz: Class Homework |
Example |
Title: 3D-shapes |
Grade: 4-a Lesson: S2-L7 |
Explanation: The best way to understand geometry is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
What is the area of one side of a cube whose length of vertices measures 16 cm?
Step 1a
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The length of one side of the cube is 16 cm. |
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Explanation: One side of cube length: 16 cm. |
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Step 1b
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The cube looks like a square. Area of square is side \$\times\$ side |
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Explanation: The cube’s resemblance to a square may be deceiving, but it is true that the faces of a cube can appear as squares. You can easily calculate the area of a square by using the formula: side \$\times\$ side. |
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Step 1c
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Now plug the values into a formula: A = \$16 \times 16\$ A = 256 sq.cm |
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Explanation: Now, substitute the values into the formula: A = 256 sq.cm |
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Step 1d
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So, the area of one side cube length is 256 sq.cm |
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Explanation: The area of one side of a cube with a length of 16 cm is 256 sq.cm. |
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