Question

Two sides of a triangle are 29.8cm and 13.6cm.If the perimeter of the triangle is 57.9cm,find the third side

Answer 1

Answer:

A triangle consists of three sides

Perimeter of a triangle refers to the sum of all the three sides.

Let the unknown side be x

Then,

29.8 + 13.6 + x = 57.9

x = 57.9 - (29.8 + 13.6)

= 57.9 - 43.4

= 14.5 cm

Answer 2

Answer:

14.5cm

Step-by-step explanation:

• Let the third side be x
• perimeter(p)=sum of all sides
• or,57.9=29.8+13.6+x
• or,57.9-43.4=x
• or, x=14.5
• hence the length of third side is 14.5 cm