A swimming pool is 20 metre long 15 metre wide and 8 metre deep. Find cost of
cementing its floor and four walls at the rate of rupees 30 per square metre
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Answer:
ANSWER
Given length of swimming pool =20m
Breadth of swimming pool =15m
Height of swimming pool =4m
Curved surface area of cuboid =2(l+b)h
=2[20+15]×4
=2×35×4
CSA of cuboid (pool)=280m2
If cost of painting is =20 Rs/sq. m
then cost of painting four walls of pool =20×280
Cost =5600Rs.
Hence cost of painting four walls of swimming pool is Rs. 5600.
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Step-by-step explanation:
Area to be covered
=Four walls And 1 Surface
=All surfaces -lb area
=2(lb+bh+lh)m²-lb
=2(300+120+160)m²-120m²
=2(580)m²-120m²
=1160-120m²
=1040m²
Cost =1040X30Rs.
=41200
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