In a triangle ABC,if a=13cm,b=14cm and c=15 cm ,then the area of triangle ABC is
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Answer:
84 cm²
Step-by-step explanation:
s=a+ b+ c/2
s= 13+14+15/2
s=21
area of triangle ABC= under root s (s-a) (s-b) (s-c)
=under root 21(21-13) (21-14) (21-15)
=under root 21×6×8×7
=under root 7056
= 84 cm²
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