Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Find area |
Grade: 6-a Lesson: S2-L3 |
Explanation: The best way to understand measurement is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
A circular track has a perimeter of 100 meters. Find the radius and area of the track.
Step 1a
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The perimeter (circumference) of a circle is given by: Perimeter = 2 π radius |
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Explanation: Here we know the perimeter formula. |
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Step 1b
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Given that the perimeter is 100 meters, we can rearrange the formula to solve for the radius: 100 = 2 3.14159 radius \$radius = 100 / (2 * 3.14159)\$ radius ≈ 15.92 meters |
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Explanation: Here we find out the radius . |
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Step 1c
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To find the area of the circle, we can use the formula: \$Area = π * radius^2\$ \$Area = 3.14159 * (15.92)^2\$ Area ≈ 795.77 square meters Therefore, the radius of the track is approximately 15.92 meters, and the area is approximately 795.77 square meters. |
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Explanation: Finally, we find out that the area. |
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