Question 750644
as per condition 
the coordinate of vertex are given as (-5,2), (5,2) ,(5,-3) therefore it is given that it is rectangle 
seeing conditions we can say  fourths vertex coordinate will be (-5,-2)
by using distance formula we can say  it will have length 10 cm and breath 5 cm 
perimeter will be   2(l+b)
  2(10 +5)  =2x15 = 30 cm
answer 30 cm