Perimeter of triangle

Question

calculation

Answer 1

if u have all 3 sides , then take sum & print ...
if u have base and altitude with the ratio in which base is divided by the altitude .. then u can easily calculate other 2 sides , & then take sum of all 3 sides
if u have the centroid & the angle which all 3 sides are taking & a common radius , then also u can easily calculate all 3 sides
//infinite other possibilities , just need to apply very very basic math

Answer 2

What data do you have?