Question

Two sides of a triangle are 15 cm and 20 cm. If the perimeter of the triangle is 55 cm, find its
third side.
of
sosceles triangle is 42
its
the third​

Answer 1

Answer:

20 cm

Step-by-step explanation:

Let the triangle be ABC

Now, Perimeter=55cm and

If AB=15cm, BC=20cm, AC=xcm

15+20+x=55

35+x=55

55-35=x

20=x

Therefore, AC=20cm