Question

Two sides of a triangle are 13cm and 14cm and its semi perimeter is 18cm. Then 5hird side of a triangle is

Answer 1

2*semiperimeter=perimeter

18*2=perimeter

perimeter =36

Let the third did be x

perimeter of triangle =sum of three sides of a triangle

36=13+14+x

36-27=x

x=8

hence our third side is 8 cm