Question

15. The floor plan of the basement of a shopping centre is drawn to a scale of 1:400.

If a supermarket has an area of 0.25 m² on the plan, find its actual area in hectares. (1 hectare = 10 000 m²)​

Answer 1

• 4 hectares

Explanation:

The scale factor is:

• k = 1/400

Applied to the area we consider k² as the area is the product of two dimensions.

Find the actual area:

• 0.25 m² : (1/400)² =
• 0.25 m² * 160000 =
• 40000 m² =
• 40000 * 1/10000 hectares =
• 4 hectares