If in a `Delta ABC,` if `r_(1)=3,r_(2)=10,r_(3)=15` then `R=`

In triangle ABC, if r_(1)=3,r_(2)=10,r_(3)=15 then c=

In triangle ABC if r_(1)=3,r_(2)=10,r_(3)=15 then c=

If in a triangle ABC,r_(1)=2,r_(2)=3 and r_(3)=6 ,then b=

In a !ABC , if r_(1) =2r_(2) =3r_(3) , then a:b:c =

In a !ABC if r_(1) = 8, r_(2) = 12 and r_(3) = 24, then a =

In a Delta ABC if r+r_(1)+r_(2)-r_(3)=lambda^(2)R cos C then lambda is

In a !ABC if r_(1) = 36 , r_(2) = 18 and r_(3) = 12 , then the area of the triangle , in square units, is