Sides of a triangle are 13 cm.14cm.and 15cm.respectively.calculate the area of triangle.
Choose the most appropriate option: A) 80 B) 82 C) 84 D) 86 E) 88
let a=13cm, b=14cm.and c=15 cm.   s=1/2(13+14+15)=21,(s-a)=8,(s-b)=7 and (s-c)=6   Area=√21*8*7*6=84 sq.cm   Answer 84
<result>C</result>
Sides of a triangle are 13 cm.14cm.and 15cm.respectively.calculate the area of triangle.