The video contains a recap on area and perimeter of circle. It then discusses the different areas related to the circle – area of a segment, sector, area enclosed by concentric circle, area of combined plane figures with detailed explanation on how we reach those formulae. The video also take the help of a few examples to explain the area of combined plane figures. Some useful results related to the circles touching internally, externally, angles subtended by minute, hour hand etc. are also included.