Question

please see attached​

Answer 1

Explanation:

l=5m

b=4m

h=3m

therefore, surface area=2(5x4+4x3+3x5)

=2(20+12+15)m2

2x 47=94m2

per m2 it costs=7.50m2

therefore, cost of washing the walls and ceilings=7.50x94=Rs705

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