Question

for an isosceles triangle having base b and each of equal side a ,find the perimeter

Answer 1

perimeter = sum of all sides
= a + a + b
= 2a +b

hope it helps

Answer 2

Isosceles triangle has two equal sides,

Then,

Equal sides = a   each
Unequal side  b 

====================

We know that perimeter is sum of lengths of all sides,


Now,

Perimeter of this triangle =  sum of all sides
                                            
                                           = a + a  + b 
 
                                           = 2a + b     units
  




i hope this will help you


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