find the area of triangle whose vertices are (2,3) ,(-1,0)and (2,-4)
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Area of triangle =1/2|x1{y2-y3}+x2{y3-y1}+x3{y1-y3}|
=1/2|2{0-(-4)}+(-1){-4-3}+2{3-0}|
=1/2|2(4)-1(-7)+2(3)|
=1/2|8+7+6|
=1/2|21|
=1/2(21)
=1(10.5)
=10.5
=1/2|2{0-(-4)}+(-1){-4-3}+2{3-0}|
=1/2|2(4)-1(-7)+2(3)|
=1/2|8+7+6|
=1/2|21|
=1/2(21)
=1(10.5)
=10.5
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