1. Starter Questions S3 www.mathsrevision.com Q1. Calculate
Q2. Make D the subject of the equation.
Q3.
Q4. Calculate
Saturday, 27 April 2019
Created by Mr Lafferty

2. length of the arc of a circleS3
Aim of Today’s Lesson
To find and be able to use the formula
for calculating the length of an arc.
Saturday, 27 April 2019
Created by Mr Lafferty

3. length of the arc of a circleS3
Q. What is an arc ?
Answer
An arc is a fraction
of the circumference. A
minor arc
major arc B
Saturday, 27 April 2019
Created by Mr Lafferty

4. length of the arc of a circleS3
Q. Find the circumference of the circle ?
Solution
10cm
Maths in Action Book Exercise 1 Questions 1 & 2
Saturday, 27 April 2019
Created by Mr Lafferty

5. length of the arc of a circleS3
Q. Find the arc length for the semi-circle ?
Solution
180o
Saturday, 27 April 2019
Created by Mr Lafferty

6. length of the arc of a circleS3
Q. Given part of the circle below. Find the arc length ?
Solution
10cm
90o
Saturday, 27 April 2019
Created by Mr Lafferty

7. length of the arc of a circleS3
3 step process to calculating the length of an arc.
Step Find the circumference of the circle.
Step 2 Find fraction of the whole circle.
Step 3 Find the arc length.
Saturday, 27 April 2019
Created by Mr Lafferty

8. length of the arc of a circleS3
Q. Part of a circle is given below. Find the arc length.
Fraction of circle
6cm
45o
Solution
Saturday, 27 April 2019
Created by Mr Lafferty

9. length of the arc of a circleS3
3 step process to calculating the length of an arc.
Step Find the circumference of the circle.
Step 2 Find fraction of the whole circle.
Step 3 Find the arc length.
Saturday, 27 April 2019
Created by Mr Lafferty

10. length of the arc of a circleS3
Q. Find the length of the arc AB below ?
Solution A
9 cm
60o B
Saturday, 27 April 2019
Created by Mr Lafferty

11. Begin Maths in Action Book page 193
length of the arc of a circle S3
Now it’s your turn !
Begin Maths in Action Book page 193
Saturday, 27 April 2019
Created by Mr Lafferty