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# Heron's Formula

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.

## Heron's Formula

Find the area of a triangle when all three sides are known

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## Heron's Formula for the Area of a Triangle and Problem Solving with Trigonometry

This lesson covers Heron's Formula and problem solving using trig.

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• PLIX

## Heron's Formula: Area of a Park

Heron's Formula Interactive

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• Video

## Heron's Formula

Determines the area of a triangle given the lengths of all three sides.

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• Practice
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