Question

the two sides of a triangle is 13 and 12 cm and it's semi perimeter is 16 cm what is the third side.​

Answer 1

Answer:

Let the third side be x

Perimeter of triangle= Sum of all sides

Therefore,

Semi-Perimter of triangle=Sum of all sides/2

16=(13+12+x)/2

Transferring 2 on other side

32=25+x

x=7

The third side is 7cm