Question

8. Two sides of a triangle are 13 cm and 18 cm. The perimeter of triangle is 48 cm.
What is the third side ?​

Answer 1

Using the formula

P=a+b+c

Solving forc

c=P﹣a﹣b=48﹣13﹣18=17cm

Answer 2

Answer ⤵️⤵️

Given: Two sides of a triangle are 13 cm and 18 cm and assume third side is x.

The perimeter of a triangle = 48 cm => 13 + 18 + x = 48

x = 17

Hence the third side of triangle is 17 cm.​