### 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

The capsule is a combination of two solids, cylinder and hemisphere.

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

The circus tent is a combination of a cone and a cylinder.

3. Lollipop

The lollipop is a combination of a sphere and a cylinder.