Question

The area of triangle formed by (1 ,2),(2,3),(x,4) is 40sq.units,then x =?​

Answer 1

Answer:

-77

Step-by-step explanation:

It can be obtained by the formulae 1/2x modulus of(x1(y2-y3)x(x2(y3-y1)x(x3(y1-y2))

Answer 2

x = -77

Step-by-step explanation:

here, The area of triangle formed by (1 ,2),(2,3),(x,4) is 40 sq.units

$x_1=1,y_1 = 2 , x_2=2,y_2= 3 \\\\x_3=x , y_3 = 4\\\\A = \frac{1}{2}(x_1(y_2-y_3)+x_2(y_3-y_1)+x_3(y_1-y_2))\\\\40 = \frac{1}{2} (1(3-4)+2(4-2)+x(2-3))\\\\40 =\frac{1}{2}(-1+4+x(-1))\\\\40= \frac{1}{2} (-x+3)\\\\80=-x+3 \\\\x= -77$

#Learn more :

Find the area of triangle formed by the points (-1,0),(2,3) and (2,-4)

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