Knowing the formula for the area of a circle
This math skill teaches how to calculate the area of a circle using the formula: the area is equal to Pi times the square of the radius.
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What is the equation for the area of a circle with a diameter of 16?
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The area of a circle is Pi times the radius squared.
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If our diameter is 16, our radius is half that, 16 over 2. So our area is Pi, times 16 over 2, squared
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Knowing the formula for the area of a circle
Test your understanding of formula for the area of a circle by practicing it! Work through the below exercises to use it in practice.