the lengths of a triangular park are 90m, 70m, 40m. find its area??
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the lengths of a triangular park are 90m, 70m, 40m. find its area??
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Length1=90m (a)
Length2=70m (b)
Length3=40m (c)
(s)=a+b+c/2
s=90+70+40/2
s=200/2
s=100
By Heron's formula=>
=>✓s(s-a)(s-b)(s-c)
=>✓100(100-90)(100-70)(100-40)
=>✓100*10*30*60
=>300✓2
So the area of ∆=300✓2
perfectly fine pure correct answer
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