Question

The paint in a certain container is sufficient to paint 8.5m sq surface. how many containers of paint will be required to paint the walls of hall room which is 12m long, 5m wide, and 4.25m in high? find the cost of paint if each container own Rs. 350/-.​

Answer 1

CSA of Room = 2(lh+bh)

2(12*4.25+5*4.25)

144.5m²

Containers required to paint = 144.5/8.5 = 17

Total Cost = 17*350 = 5950 Rs

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Answer 2

Answer:

containers of paint will be required to paint the walls of hall room which is 12m long, 5m wide, and 4.25m in high

$= \frac{2lb + 2bh + 2lh}{8.5} \\ = \frac{120 + 42.5 + 102}{8.5} \\ = \frac{264.5}{8.5} = 31$

cost of paint if each container own Rs. 350/-

$= 31 \times 350 = 10850$