Question

find the perimeter of the triangle with vertises (0,4) ,(0,0) , (3,0)

Answer 1

firstly using herons formula find all the 3 sides
$\sqrt{(x2 - x1) { }^{2} + (y2 - y1) {}^{2} }$
then add all the three sides you will get the perimeter of the triangle

Answer 2

A(0,4),. B(0,0) , C(3,0)
AB=√(0-4)(0-4)+(0-0)(0-0)
AB=4
similarly BC=3,. AC=5
perimeter of triangle ABC=AB+BC+AC
=4+3+5=12