Calculate Flooring Cost: Scaling from 28x10m to 84x30m Room

To solve this problem, we’ll perform the following steps:

• Step 1: Calculate the area of the original classroom:
  Since the dimensions are given as 28 mts by 10 mts, the area is:
  $(28 \times 10) = 280 \text{ square meters}$.
• Step 2: Calculate the area of the new classroom:
  The dimensions are given as 84 mts by 30 mts, so the area is:
  $(84 \times 30) = 2520 \text{ square meters}$.
• Step 3: Find the ratio of the new classroom's area to the original classroom's area:
  $\frac{2520}{280} = 9$.
• Step 4: Calculate the cost for the new classroom:
  Since the area is 9 times larger, the cost will be 9 times the original cost:
  $9 \times 3799 = 34191$.

Therefore, the cost to install a wood floor in the new classroom is $34191$ .