Question

the semi perimeter of a triangle having its side length 14cm, 16cm, 18cm​

Answer 1

ANSWER

Semiperimeter, S=18 cm

Let the side of the triangle be a,b,c such that

a=16 cm, b=14 cm

S= a+b+c/2

= 16+14+c/2

18=30+c/2

c=36−30=6 cm

Therefore, third side of triangle is 6 cm