Year 8
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Lesson details
Key learning points
- In this lesson, we will look at different formulas for area of a circle and combine your knowledge with the work on circumference.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
What is the area of circle a?
14pi
7pi
Q2.
What is the area of circle b?
2 pi
4 pi
Q3.
What is the area of circle c?
10 pi
100 pi
5 pi
Q4.
What is the area of a circle with radius of 12?
12 pi
24pi
36pi
Q5.
What is the area of a circle with a diameter of 6?
144 pi
36 pi
6 pi
5 Questions
Q1.
What is the area of a circle with radius 5cm to 1d.p?
15.7
246.7
31.4
Q2.
What is the circumference of a circle with radius 8cm to 1d.p?
201.1
25.1
Q3.
What is the diameter of a circle with a circumference 40m?
3.2
6.3
6.4
Q4.
The area of a circle is 25 cm squared. What is the diameter
2.8 cm
3.2cm
8.0cm
Q5.
The area of a circle is 144 pi. What is the circumference?
12pi
5184pi
6pi