Radha made a picture of an aeroplane with coloured paper as shown in figure. Find the total area of the paper used.

Explanation

To find the total area of the paper used by Radha to make the aeroplane picture, we need to calculate the areas of different parts of the aeroplane as described in the problem. Let's break it down step by step.

### Step 1: Calculate the area of the first triangle
The first part of the aeroplane is a triangle with sides of lengths 5 cm, 5 cm, and 1 cm.

1. **Calculate the semi-perimeter (s)**:
\[
s = \frac{a + b + c}{2} = \frac{5 + 5 + 1}{2} = \frac{11}{2} = 5.5 \text{ cm}
...