Find the area of the quadrilateral formed by joining the points A(-4,8),B(-4,2),C(6,-7) and D(-6,1) in order.
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Answer:
The sides of quadrilateral
AB = 6
BC = 13.453624
CD = 14.4222051
AD = 7.28010989
Then,
Semi-Perimeter
s= 41.155939/2= 20.5779695
The area of quadrilateral,
A = √(s-a)(s-b)(s-c)(s-d)
A = √(20.58-6)(20.58-13.45)(20.58-14.22)(20.58-7.28)
A = √(14.58*7.13*6.36*13.3)
A = √8,793.37938
A = 93.77 Sq units.
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