a swimming pool is of 450 cm in length and 350cm in breadth and 300 cm in depth . find the cost of cimenting it at the rate of Rs 80 per m²
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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)=280m
2
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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Answer:
LENTH=450cm=450/100m= 4.5m
BREADTH=350cm=350/100m=3.5m
DEPTH=300cm=300/100m=3m
Since in the question the rate is given in m² therefore we need to find the area of swimming pool and not the volume
So
AREA OF SWIMMING POOL= (4.5×3.5)m²
=15.75m²
RATE OF CEMENTING= 80/m²
TOTAL COST OF CEMENTING
= (80×15.75)rupees=1260 rupees
ANS THE COST OF CEMENTING IS 1260 rupees