Surface Areas and Volumes
 Curve Surface area of combination of solids:

 Curved surface area of a cuboid = 2h (l + b)

 Curved surface area of a cube = 4a^{2}

 Curved surface area (CSA) of a cylinder = 2πrh

 Slant height of the cone, where h is the height of the cone
Curved surface area (CSA) of a cone = πrl

 Curved surface area (CSA) of a hemisphere = 2πr^{2}
Note: Height of the hemisphere = Radius of the hemisphere
Example:
A toy is in the form of a hemisphere…
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