Question

the perimeter of an isosceles triangle with equal sides 10 cm and third side 4 cm​

Answer 1

Answer:

The length of the third side is 10 cm.

Step-by-step explanation:

Two sides of an isosceles triangle are 4 cm and 10 cm

In an isosceles triangle two sides are equal.  

Case 1:  

Let the third side be 4 cm.

For any triangle with sides let say a,b,c, then

a+b > c and

c+b > a  and

c+a > b

In this case 4+4 = 8 < 10

So, the third side of 4 cm will not possible.  

Case 2:  

Let third side be 10 cm

10+4 = 14 >1 0 and  

10+10 = 20 > 10

Therefore, 10 cm is the third side.

Hence, the length of the third side is 10 cm.

            I hope this answer will help you....