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Lesson details

Key learning points

  1. In this lesson, we will learn how to calculate the area of compound shapes involving circles.

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.
If the circumference of a circle is 12pi, what is the area?
144pi
Correct answer: 24pi
36pi
6pi
Q2.
What is the area of this sector?
An image in a quiz
100pi
25pi
Correct answer: 50pi
5pi
Q3.
What is the area of this sector to 1 decimal place?
An image in a quiz
113.1
28.3
Correct answer: 7.1
Q4.
What is the area of this sector to 1 decimal place?
An image in a quiz
324.2
Correct answer: 40.5
7.1
81.1
Q5.
What is the area of this sector to 1 decimal place?
An image in a quiz
24.1
Correct answer: 265.0
48.2
530.1

5 Questions

Q1.
What calculation would work out the shaded area?
An image in a quiz
100 - 10pi
100 - 20pi
Correct answer: 100 - 25pi
100 - 5pi
Q2.
What calculation would work out the shaded area?
An image in a quiz
12pi - 10pi
Correct answer: 36pi - 25pi
6pi - 5pi
Q3.
What calculation would work out the total area?
An image in a quiz
16 + 16pi
16 + 8pi
Correct answer: 32 + 16 pi
32 + 8pi
Q4.
What is the total area?
An image in a quiz
12pi + 13
Correct answer: 12pi + 42
12pi + 49
4pi + 20
Q5.
A square of perimeter 80cm is attached to a semi-circle, they fit together with no overlap. What is the total area?
200 + 20pi
Correct answer: 200 + 50pi
80 + 50pi
80 +20pi