13. A rectangular hall is 25 m long and 10 m wide and its height is 6 m. Fin
cost of painting the walls of the hall at the rate of 2 per sq.m
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Answer:
cost of painting = area of rectangle lXb=25×10×2=500
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Step-by-step explanation:
area of two wall. = l× h × 2
= 25× 6 × 2
= 300 m^2
area of other two wall = b × h ×2
= 10×6×2
= 120m^2
total area = 420m ^2
cost of painting = 420× 2
= 840 RS.
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