SOLUTION: Find its area. A = (-2, 5); B = (1, 3); C = (-1, 0)

Question 491981: Find its area.
A = (-2, 5); B = (1, 3); C = (-1, 0)

Answer by cleomenius(959) (Show Source): You can put this solution on YOUR website!
We will use the distance formula to find the distance between vertices.

AB =
AB =
AB =
==========================================
BC =
BC =
BC =
==========================================
AC =
AC =
AC =
Ac =

==========================================
At this point, I converted to decimals, they are easier to work with.
AC = 3.6
BC = 3.6
AC = 5.1
============================================
Now, we use Herons formula to find the area.
Area =
s = (3.6 + 3.6 + 5.1) / 2
s = 12.3/ 2 =6.15
Area =
Area =
Area = 4.4
Cleomenius.
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