Area of a circle

What is the difference between area and circumference?

How do we calculate the area of a circle? (This is also a formula that must be memorised).

Exercise

Let’s complete exercise 14 from pages 18 to 20 of the core textbook:

The answers are below:

Now let’s use these formulas to find the area of more complicated shapes including parts of circles, and to find the radius when we know the circumference.

Exercise

Let’s complete exercises 15 to 17 from pages 20 to 23 of the core textbook:

The answers are below: