Understanding Pi Worksheet
Explore the concept of Pi, its definition, calculation, and applications in geometry for Grade 9 students.
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Understanding Pi
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Pi (π) is the ratio of a circle's circumference to its .
2. The value of Pi is approximately .
3. Pi is an number, meaning its decimal representation never ends and never repeats.
4. Which of the following formulas uses Pi?
Area of a square
Volume of a rectangular prism
Circumference of a circle
Perimeter of a triangle
5. If a circle has a diameter of 10 cm, its circumference is approximately:
31.4 cm
15.7 cm
78.5 cm
100 cm
6. Draw a circle and label its radius, diameter, and circumference. Explain how Pi relates to these measurements.
7. A circular garden has a radius of 7 meters. Calculate its circumference and area. Use π ≈ 3.14.
8. Pi is a rational number.
True
False
9. The area of a circle with radius 'r' is given by the formula A = 2πr.
True
False
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