Question

Find the approximate area of the quadrilateral with the giving coordinates A(0,4)
B(6,1)
C(3,-5)
D(-3,-2)

Answer 1

$area \: of \: quadrilateral \: = \frac{1}{2} |( - 48) - (42) \\ = \frac{1}{2} | - 90| \\ = | - 45 | \\ = 45$