C = 2πr: Problem Solving & Reasoning
Mathematics
Grade 8
11 questions
~22 mins
1 views0 downloads
About This Worksheet
A worksheet focusing on calculating and applying the formula C=2πr for Grade 8 students, including practice, reasoning, and real-world problems.
Worksheet Preview
Full preview • 11 questions
C = 2πr: Problem Solving & Reasoning
Subject: MathematicsGrade: Grade 8
Name:
Date:
TeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizz
Untitled Worksheet
Grade Grade 8
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Calculate the circumference of a circle with a radius of 4 cm.
[2 marks]2.
A circular garden has a radius of 7 meters. Find its circumference.
[2 marks]3.
If the circumference of a circle is 50 cm, what is its radius? (Use π ≈ 3.14)
[3 marks]4.
Construct a circle with a radius of 5 units on the grid. Calculate its circumference.
[3 marks]5.
A bicycle wheel has a diameter of 70 cm. Find the wheel's circumference.
[2 marks]6.
A circular pool has a circumference of 94.2 meters. What is its radius? (Use π ≈ 3.14)
[3 marks]7.
A circular track has a radius of 150 meters. How long is the track's circumference?
[2 marks]8.
Explain why the circumference of a circle is directly proportional to its radius.
[4 marks]9.
A running track has a circumference of 400 meters. If the radius of the track is doubled, what will be the new circumference?
[3 marks]10.
A circular pizza has a radius of 12 inches. Calculate its circumference and explain what this measurement represents in the context of the pizza.
[4 marks]11.
A student calculates the circumference of a circle with radius 6 cm as 37.68 cm using π ≈ 3.14. Is this correct? If not, identify and correct the mistake.
[4 marks]Quick Actions
What is Remix?
Create a new worksheet based on this one. Change the grade level, topic, number of questions, or difficulty - then generate a fresh version.
- • Change grade level (Grade 6 → Grade 7)
- • Swap topics (Harry Potter → Macbeth)
- • Add more questions (10 → 15)
- • Adjust difficulty
Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet