We use this formula: <span>Area = ½ • side 1 • sine (A) • side 2 </span>Area = <span>½ • 6 • sine (74) • 7 </span><span>Area = <span>21 • sine (74) Area = 21*0.96126 Area = </span></span><span><span><span>20.18646
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Area = 20.2 (rounded) Source: http://www.1728.org/triang.htm