Question

What is the perimeter of an isosceles triangle with equal sides 5cm each and third side is 8cm?
a) 18cm
b) 15cm
c) 13 cm
d) 17cm​

Answer 1

Perimeter of any triangle = sum of three sides

Here, it is an isosceles triangle

=> Perimeter of this triangle= sum of the three sides

                                             =5+5+8

                                             =18 cm

∴ perimeter= a)18cm