Grade 8 Circles Worksheet
This worksheet focuses on understanding and calculating properties of circles, including circumference, area, radius, and diameter, suitable for Grade 8 math students.
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Grade 8 Circles Worksheet
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Date:
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following is the formula for the circumference of a circle?
A = πr²
C = πd
C = 2r
A = 2πr
2. If the diameter of a circle is 10 cm, what is its radius?
5 cm
10 cm
20 cm
31.4 cm
3. The distance around a circle is called its .
4. The ratio of a circle's circumference to its diameter is approximately .
5. Calculate the circumference of a circle with a radius of 7 cm. Use π ≈ 3.14.
6. Find the area of a circle with a diameter of 14 meters. Use π ≈ 3.14.
7. For the circle shown below, identify its radius and diameter, then calculate its circumference and area. Use π ≈ 3.14.
Radius:
Diameter:
Circumference:
Area:
8. A chord is always longer than the diameter of a circle.
True
False