Question

sides of a triangle are 10 cm and 12 cm The perimeter of the triangle is 35 cm. What
will be the length of the third side?​

Answer 1

Answer:

13 cm

Given:

A ∆ABC in which AB=10 cm, AC=12 cm and perimeter of triangle is 35 cm

To find:

Length of the third side

Solution:-

Let the third angle be x

Then We know that

Perimeter=Sum of all sides

35=10+12+x

35=22+x

x=35-22

x=13

----------

Third side is 13 cm

----Verifi©ation----

10cm+12cm+13cm=35cm

35cm=35cm

L.H.S=R.H.S

Answer 2

Answer:

Step-by-step explanation:

In a given triangle ABC

AB=10cm

BC=12cm

CA= ?

Perimeter of triangle ABC is 35cm

AB+BC+CA=35

10+12+CA=35

22+CA=35

CA=35-22

CA=13