Question

find the perimeter of

triangle 20 cm and 15 cm
​

Answer 1

Answer:

u have not given 3rd side

Answer 2

Step-by-step explanation:

Solution :

Sides of triangle is 20 cm , 15 cm and 9 cm

Semi-Perimeter of triangle =\frac{ \text{Sum of all sides}}{2} = \frac{20+15+19}{2} = 27

2

Sum of all sides

=

2

20+15+19

=27

Hence The semi perimeter of a triangle whose sides are 20 cm , 15cm and 9cm is 27 .