In this article, we have discussed formulas of important 2D figures which are frequently asked. We have compiled important information which are mostly asked in SSC Exams at one place. # Rectangle Let d 1 and d 2 are diagonals of the given rectangle ABCD. then, both diagonals are equal but not perpendicular to each other. Area of rectangle = length x breadth and perimeter = 2(length+breadth) # Path outside the rectangle Suppose there is a park having length l and breadth b . There is a road of width x outside of it. Then, Area of path = 2x ( l + b + 2x) # Path inside the rectangle Suppose there is a park having length l and breadth b . There is a road of width x inside of it. Then, Area of path = 2x (l + b – 2x) # When there is a road along both the length and breadth of the park . Then, Remaining area of Rectangle (shaded region) = (l–x) (b-x) Area of the path = lx + bx – x 2 # Circle : Given a circle of radius ‘r’ W