Summary
In this chapter, you have studied the following points:
1. To determine the surface area of an object formed by combining any two of the basic solids, namely, cuboid, cone, cylinder, sphere and hemisphere.
Curved surface area of a cone =
Total Surface area of a right circular cone = πrl +
Surface area of a sphere =
Curved surface area of a hemisphere =
Total surface area of a hemisphere =
2. To find the volume of objects formed by combining any two of a cuboid, cone, cylinder, sphere and hemisphere.
Volume of a cone =
Volume of a sphere =
Volume of a hemisphere =
[Here, letters l, b, h, a, r, etc. have been used in their usual meaning, depending on the context.]