Circles - Area of a circle Part 3

HideShow resource information

There is only one formula for the area of a circle:

A =  πr2 

We must therefore remember to use the radius each time:

Question 1: Find the area of a circle with a diameter of 20 cm. Use the π button on my calculator, and give the answer correct to 1 dp.

Answer 1: We have been told

Comments

No comments have yet been made

Similar Mathematics resources:

See all Mathematics resources »See all Volume and surface area resources »