Find the cost of painting 15 cylindrical pillars of a building at rupees 2.50 per square m if the
diameter and height of each pillar are 48cm and 7 m respectively
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Total surface area of one cylinder = 2*3.14*r*r + 2*3.14*r*h
r=d/2=24cm=0.24m
h=7m
Total surface area= 10.9121 sq m
Cost for one cylindrical pillar = 10.9121*2.50 Rs
Cost for 15 cylindrical pillars = 10.9121*2.50*15=Rs 409.21
r=d/2=24cm=0.24m
h=7m
Total surface area= 10.9121 sq m
Cost for one cylindrical pillar = 10.9121*2.50 Rs
Cost for 15 cylindrical pillars = 10.9121*2.50*15=Rs 409.21
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