Question 437273
a triangle has sides, in cm, of 3, 5 and 6. Use a=3, b=5 and c=6 to work out the area of this triangle.
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Use Heron's Law:
{{{Area = sqrt(s(s-a)(s-b)s-c))}}} s = perimeter/2 = 7
{{{Area = sqrt(7*1*2*4) = sqrt(56)}}}
Area =~ 7.483 sq cm