# Area of a Circle

## Pi times the radius squared.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Area of a Circle

This concept teaches students how to calculate the area of a circle.
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## SLT 2 Informally prove the formula for the area of a circle.

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## Area of a Circle

Find the area of a circle given the radius or the diameter. EngageNY has been used for a portion of this content.
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## Area of a Circle

Find the area of a circle given its radius or diameter.
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• Real World Application