Question

perimeter of triangle = side 15

Answer 1

perimeter =sum of all sides
=15+15+15
=45

Answer 2

Perimeter of triangle= side + side + side

=. 15 + 15 +15

= 45

Or

= 3 × a(a is taken as side)

= 3 × 15

= 45

Please mention units such as cm , m