William has been contracted to paint a school classroom. The classroom is 20 m long, 15 m wide and 5 m high. There are four windows (2m by 3m) and a door (2m by 1m).

Question

a) What is the cost of painting the ceiling at N$ 6.50 /m²? [5 marks]
b) What is the cost of painting the walls (excluding the windows and door) at N$ 8.50 /m²? [5 marks]
c) What is the cost of tiling the floor using tiles (20 cm by 20 cm) that are sold in boxes of 50 tiles each at N$ 50 per box? [5 marks]
d) What is the cost of providing air conditioning for this classroom at N$

Answer 1

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Answer 2

2(20*5)+2(15*5)=350

350*8.50=2975

Answer 3

1950