Find the area of triangle whose sides are 13 cm, 14 cm and 15 cm.​

1 thought on “Find the area of triangle whose sides are 13 cm, 14 cm and 15 cm.​”

1. Step-by-step explanation:

   • Here, Let a=13cm ,b = 14cm and c =15 cm
   • Now, Semiperimeter(s) = a+b+C/2=13+14+15/2 = 42/2 = 21cm
   • Now, Area of triangle by herons formula =√s*(s–a)(s–b)(s–c)
   • = √21*(21–13)(21–14)(21–15)
   • = √21*8*7*6 = √7*3*2*2*2*7*3*2 =√7*7*3*3*2*2*2*2 = 7*3*2*2= 21*4 = 84 cm^2.

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