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What is the area of a triangle with side lengths 13, 14, and 15?

 Feb 21, 2021
 #1
avatar+31 
+3

I'm pretty sure its 84

 Feb 21, 2021
 #2
avatar+31281 
+3

Use Heron's formula     p = (13 + 14 + 15)/2 = 21

 

area = sqrt ( p (p-13)(p-14)(p-15)  )  

         = sqrt (21 (8)(7)(6)  )  = 84    units2         as Penguin stated !

ElectricPavlov  Feb 21, 2021

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