Question

BM,CN are altitude of triangle ABC.If AB equals 3.5cm AC equals 3.5cm AC equals to 3.2cm and Bm equals to 2.1cm calculate the area of triangle ABC and hance find CN

Answer 1

AC equals 3.5cm AC equals to 3.2cm

so, which is it? It makes a difference if ABC is isosceles. In that case, BM=CN.

Answer 2

actually, it doesn't matter. BM is the altitude to AC. So, the area of ABC is 1/2 BM * AC

So, 1/2 * CN * AB = 1/2 BM * AC
so, solve for CN after plugging in your (correct) values.