SOLUTION: How many Square feet are in a triangle that measures 42 Feet on all three sides?

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Question 326259: How many Square feet are in a triangle that measures 42 Feet on all three sides?
Found 2 solutions by rfer, mananth:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
42*42/2=882 sq ft

Answer by mananth(16949) About Me  (Show Source):
You can put this solution on YOUR website!
length of side = 42
Perimeter = 3*42= 126
area+=sqrt%28s%28s-a%29%28s-b%29%28s-c%29%29
a,b,c are the sides and s= 1/2 perimeter
area = sqrt%2863%2A%2863-42%29%2863-42%29%2863-42%29%29
area=sqrt%283%2A63%2A21%29
area=sqrt%2863%2A63%29
area = 63 sq.feet