Coordinates and shapes: To solve practical problems involving circles

Maths

What is the approximate circumference of this circle?

3 circles with radius 3 cm are placed next to each other. What is the length of the row?

4 circles with diameter 4.1 cm are placed next to each other. What is the length of the row?

Which part of the circle does the arrow represent?

Examples of which part of the circle are shown below?

Use the given radius to calculate the diameter of the circle.

Use the given diameter to calculate the radius of the circle.