Question

Two sides of a triangle are 13 cm and 14 cm and its semi perimeter is 18 cm find the third side of this traingle

Answer 1

Answer:

9 cm

Step-by-step explanation:

Semi perimeter is 18 cm,

∴ Total perimeter = 18x2= 36

Let the third side be x.

Sum of two sides of the triangle = (13+14)cm =27 cm

⇒27+x = 36

⇒x = 36-27=9

∴ x = 9cm

The third side of the triangle is 9cm.