Calculate the area of triangle formed by joining the points (4,0),(0,0) and (0,4)

Dear student
Let A=x1,y1=4,0,B=x2,y2=0,0,C=x3,y3=0,4be the given points. Then,Area of ABC=12x1y2-y3+x2y3-y1+x3y1-y2=1240-4+0(4-0)+0(0-0)=12-16=8 sq. units
Regards

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8 cm^2.you can find it by drawing x and y axis with a origin and plot the points in the 1 quadrant
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