# Coordinates and shapes: To solve practical problems involving circles

## Lesson details

### Key learning points

1. In this lesson, we will identify relationships between circle parts and then solve problems 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.

## Video

Share with pupils

## Worksheet

Share with pupils

## Starter quiz

Share with pupils

### 5 Questions

Q1.
Which part of the circle does the arrow represent?
Diameter
Q2.
Examples of which part of the circle are shown below?
Circumference
Diameter
Q3.
Examples of which part of the circle are shown below?
Circumference
Q4.
Use the given radius to calculate the diameter of the circle.
2.1 cm
21 cm
84 cm
Q5.
Use the given diameter to calculate the radius of the circle.
10 cm
42 cm

## Exit quiz

Share with pupils

### 4 Questions

Q1.
What is the approximate circumference of this circle?
Approximately 10.5 cm
Approximately 21 cm
Q2.
What is the approximate circumference of this circle?
Approximately 12.6 cm
Approximately 8.4 cm
Q3.
3 circles with radius 3 cm are placed next to each other. What is the length of the row?
12 cm