Question

find the area of triangle formed by the point A(5,2) , B(4,7),C(7,-4)​

Answer 1

Find the area of a triangle formed by the points A(5, 2), B(4, 7) and

C (7,-4).

Area of triangle ABC = [X1(72 – Yə) + x>[/3 - Yg) + x3[/2 – Y2)]

Here

X1 = 5, y = 2

X2 = 4, Y2 = 7

X3 = 7, y3 = -4

Putting values

Area of triangle ABC =[5(7- (-4)) + 4(-4- 2) + 7(2 - 7) ]

=[5(7 + 4) + 4(-6) + 7(-5)]

=[5(11) + 4(-6 ) + 7(-5)]