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ULTIMATE MATHS

WHERE MATHS IS AT YOUR FINGERTIPS!

Example 1
Find the area of the circle with a radius of 3 cm.
Using the formula for the radius, we were able to calculate the area of the circle. The area of the circle is 28.3 cm². You can usually give
your answer in terms of pi (more accurate) or in decimals.

Example 2
Find the area of the circle with a diameter of 5 cm.
Using the formula for the diameter, we were able to calculate the area of the circle. The area of the circle is 50.3 cm². We just had to
substitute the diameter into the formula.

Example 3
Find the area of the circle with a circumference of 16 cm.
Using the formula for the circumference, we were able to calculate the area of the circle. The area of the circle is 20.4 cm². We just had
to substitute the circumference into the formula.

Example 3
Find the circumference of the circle.
Using the formula, pi and the diameter of the circle we were able to find the circumference. The circumference of the circle is 15.7 cm.

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Chapter 29: Learning Outcomes
Students will be introduced to pi!
Students will learn how to use pi to find the area of a circle!
Students will learn how to use pi to find the circumference of a circle!

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