Exploring Pi (π)
A Grade 8 math worksheet exploring the concept of Pi, its calculation, and application in circles.
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Exploring Pi (π)
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Read each question carefully and answer to the best of your ability. Show all work where applicable. Use 3.14 for Pi unless otherwise specified.
1. Pi (π) is the ratio of a circle's to its .
2. The approximate value of Pi is .
3. The formula for the circumference of a circle is C = πd or C = .
4. The formula for the area of a circle is A = .
1. A circular swimming pool has a diameter of 10 meters. What is its circumference?
2. A bicycle wheel has a radius of 30 cm. How far does the bicycle travel in one full rotation of the wheel?
1. Find the area of a circular rug with a radius of 2 meters.
2. A circular garden has a diameter of 8 feet. What is the area of the garden?
1. If the circumference of a circle is 31.4 units, what is its approximate diameter?
5 units
10 units
15 units
20 units
2. Which of the following best describes Pi?
The area of a circle
The perimeter of a square
The ratio of circumference to diameter
The radius of a circle
1. Pi is an irrational number.
True
False
2. The value of Pi changes depending on the size of the circle.
True
False