Anda is a teacher in Zambia - NSC Mathematical Literacy - Question 4 - 2024 - Paper 2

The rooms with TWO double doors are 'Computer Lab' and 'Reading Room'. The room with ONE single door is 'Classroom 1'.

One feature indicating that the school has more than one level is the presence of a staircase in the layout plan.

Anda exited the room named 'Laboratory' during the evacuation drill.

To calculate the total area of the laboratory:

• Area = Length × Width
• Length = 11 m = 11000 mm, Width = 7 m = 7000 mm

$\text{Area} = 11000 \text{ mm} \times 7000 \text{ mm} = 77,000,000 \text{ mm}^2$

Now, convert the area from mm² to m²:

$\text{Area} = \frac{77,000,000}{1,000,000} = 77 \text{ m}^2$

Each tile covers an area of $\text{Area of tile} = 600 \text{ mm} \times 600 \text{ mm} = 360,000 \text{ mm}^2 = 0.36 \text{ m}^2$

Number of tiles needed:

$\text{Number of tiles} = \frac{77 \text{ m}^2}{0.36 \text{ m}^2} \approx 214.44 \text{ tiles}$

Thus, number of boxes needed:

$\text{Boxes needed} = \frac{214.44}{5} \approx 42.89 \text{ boxes}$

Hence, the claim of needing 40 boxes is INVALID since approximately 43 boxes are necessary.