rpm

Thanks parajulibharat, Got it. Clear now. -rpm

The diagonal =10, and since the triangle is 30-60-90 can't we say the shorter side(s)= 10/2 and the longer side (l)= 10*sq root(3)? So perimeter =2(s+l). So answer is A. Isn't this ok?

A Data Sufficiency problem from OG: What is the perimeter of the rectangle? 1.The length of a diagonal of the rectangle is 10, 2.The area of the rectangle is 48 (don't exactly recall if its 48 but think it is) sq units. I thought the answer will be A since one could calculate the length of the sides from 1. Please comment.