CBSE Class 9 - Maths - CH 13 - Surface Area and Volume (Study Points) Surface Area & Volume Key Concepts S.no. Name Figure Lateral/ Curved Surface Area Total Surface Area(TSA) Volume(V) Symbols use for 1 cuboid 2(l + b)xh 2(lb + bh + hl) lbh l=length b=breadth h=height 2 cube 4s2 6s2 s3 s = side 3 Right circular cylinder 2Πrh 2Πr(h + r) Πr2h h = height r = radius of base 4 Right circular cone Πrl Πr(l + r) 1 3 Πr2h r = radius of base h = heightl = Slant height 5 Sphere 4Πr2 4Πr2 4 3 Πr3 r = OA = radius 6 Hemisphere solid 2Πr2 3Πr2 2 3 Πr3 r = OA = radius 7 Hemisphere hollow 2Πr2 2Πr2 2 3 Πr3 r = OA = radius
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