Area=21∣x1(y2−y1)+x2(y3−y1)+x3(y1−y2)∣
Plugging values,
x1=−3,x2=4,x3=−3
y1=2,y2=−2,y3=−2
Plugging the values in above formula,
Area=21∣(−3)[−2−(−2)]+4(−2−2)+(−3)[2−(−2)]∣
Area=21∣(−3)[−2+2]+4(−2−2)+(−3)[2+2]∣
Area=21∣(−3)[0]+4(−4)+(−3)[4]∣
Area=21∣0−16−12∣
Area=21∣−28∣
Area=21×28
Area=14
So, area = 14 square units.
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