Theory:

In our day-to-day life, we come across a wide range of objects that are in the form of a combination of two or more solid shapes.
 
Let us discuss some real-life examples in this article.
 
1. Capsule
 
capsule.png
 
The capsule is a combination of two solids, cylinder and hemisphere.
 
12.png
 
Hence, to find the total surface area of the capsule is given by:
 
TSA of the capsule \(=\) CSA of the hemisphere \(+\) CSA of the cylinder \(+\) CSA of the hemisphere.
 
TSA of the capsule \(=\) \(2 \pi r^2 \) \(+\) \(2 \pi r  h\) \(+\) \(2 \pi r^2 \)
 
\(=\) \(4 \pi r^2 \) \(+\) \(2 \pi r  h\)
 
\(=\) \(2 \pi r (2r + h)\) square units
 
2. Circus tent
 
cirkus.png
 
The circus tent is a combination of a cone and a cylinder.
 
13.png
 
3. Lollipop
 
lollipop.png
 
The lollipop is a combination of a sphere and a cylinder.
 
8.png