Question

If a=7,b=8 and c=9,then the length of the median through B of the triangle ABC is

Answer 1

Answer:

s=a+b+c

_______

2

s=12

area of ABC=√s(s-a)(s-b)(s-c)

=√12×5×4×3

=12√5

let median through B intersect Ac at point D

ABC=1/2× Ac×Bd

12√5=1/2×8×bd

bd=3√5