A plan uses a scale of 1:200. What are the actual dimensions and floor area of a classroom and a computer lab shown on this plan?

For questions 2.3 (a) and (b), it is assumed that the plan uses Scale D, which is a ratio scale of $1 : 200$. This means $1 \text{ cm}$ on the plan represents $200 \text{ cm}$ in actual distance.

Given:
Classroom Length on Plan = $3,5 \text{ cm}$
Classroom Width on Plan = $2,5 \text{ cm}$
Scale Denominator = 200

Actual Length = Plan Length $\times$ Scale Denominator

Convert to meters ($1 \text{ m} = 100 \text{ cm}$):

Actual Width = Plan Width $\times$ Scale Denominator

Convert to meters:

Given:
Computer Lab Length on Plan = $4,0 \text{ cm}$
Computer Lab Width on Plan = $3,0 \text{ cm}$
Scale Denominator = 200

First, calculate the actual length and width in meters:
Actual Length = Plan Length $\times$ Scale Denominator

Convert to meters:

Actual Width = Plan Width $\times$ Scale Denominator

Convert to meters:

Now, calculate the actual floor area:
Actual Floor Area = Actual Length $\times$ Actual Width

The image provided only shows the title "QUESTION 3 CALCULATING MAP DISTANCE & DETERMINING THE SCALE" and a key formula. There are no specific sub-questions or tasks to solve under Question 3 in this image.