How do you use Heron's formula to find the area of a triangle with sides of lengths #9 #, #5 #, and #12 #?
1 Answer
Jan 21, 2016
Use Heron's formula to find area
Explanation:
Heron's formula gives the area
#A = sqrt(s(s-a)(s-b)(s-c))#
In our example,
#A = sqrt(s(s-a)(s-b)(s-c))#
#= sqrt(13*4*8*1) = sqrt(416) = 4sqrt(26) ~~ 20.396#