Question

The lengths of two sides of a triangle is 7 cm and 5cm. The Perimeter of the triangle is 25cm, find the length of the third side. ​

Answer 1

Answer:

The Correct Answer is mentioned below

Step-by-step explanation:

A triangle's perimeter is defined as the whole length of its boundary. A triangle is a three-sided polygon that can be categorised into numerous forms based on the lengths of its sides and angles. Depending on the type of triangle, there are several formulas and methods for calculating the perimeter.

Length of One Side is: 7cm

Length of Second Side is: 5cm

Perimeter of the triangle: 25cm

Let the third side will be 'x' cm

Therefore,

7 + 5 + x = 25 cm

12 cm + x = 25 cm

x = 13 cm  

Answer 2

Answer:

13cm

Step-by-step explanation:

Perimeter of a triangle is sum of all the sides

a= 7

b = 5

c = ?

So a + b + c = 25

⇒7+5+c = 25

⇒12 + c =25

⇒c = 25 -12

⇒c = 13

Ans = 13cm

Hope this will help you