Explain the scale 1:100 and calculate the dimensions of a seat on a drawing if its real-life dimensions are 0.5m x 0.5m. Also, explain the importance of scale drawings.

$$\text{Scaled dimension} = \frac{50 \text{ cm}}{100} = 0.5 \text{ cm}$$

A scaled diagram of one seat would be a square with sides measuring $\boxed{\text{0.5 cm} \times \text{0.5 cm}}$.

3.2.3 Working with scale drawings is important because it allows for accurate visualization and planning of space and layout, ensuring that all components fit correctly and that there is adequate room for movement and facilities before construction.