Use Heron's Area Formula to Find the Area of the Triangle

question 27

Multiple Choice

Use Heron's area formula to find the area of the triangle pictured below, if $a = 8$ inches, $\mathrm { b } = 10$ inches, and $\mathrm { c } = 4$ inches.

• A) \(\sqrt { 21 }\)
• B) 16
• C) 40
• D) \(12 \sqrt { 21 }\)
• E) \(\sqrt { 231 }\)

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