The four walls and buttom of a swimming pool are to be painted at the rate of Rs 800 per metersquare.If lenght of the pool is 24m,breadthis 12m and depth is 4 m,find the cost of painting work.
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Step-by-step explanation:
A pool is a cuboid which is open from the top.
Here,length(l) of cuboid = 24m
breadth(b) of cuboid = 12m
height(h) of cuboid = 4m(Here,we have to consider depth as height)
Total area of pool = C.S.A. of cuboid(i.e. area of 4 walls) + l×b(i.e. area of bottom).
=>Total area of pool = 2(l+b)×h + l×b
= 2(24+12)×4+24×12
= 2(36)×4 + 288
= 72×4+288
= 288+288
= 576m^2
=>Cost of painting the pool at 1m^2=₹800
=>Cost of painting the pool at 576m^2=₹800×576
=₹460800 ans.
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