SOLUTION: One equilateral triangle has sides 5 ft long. Another equilateral triangle has sides 7 ft long. Find the ratio of the areas of the triangles

Question 365993: One equilateral triangle has sides 5 ft long. Another equilateral triangle has sides 7 ft long. Find the ratio of the areas of the triangles
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
semiperimeter = 5+5+5/2= 7.5
..
area of triangle = sqrt(s*(s-a)(s-b)(s-c)) where a,b,c are the sides
area = sqrt(7.5*(2.5)(2.5)2.5))
10.82
...
area of othe triangle =
sqrt(10.5*(3.5)(3.5)(3.5))
= 21.21
..
Ratio = 10.82/21.21
...
=0.51
m.ananth@hotmail.ca
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