find the cost of painting 15 cylindrical pillars of a building at rupees 2.50 square meter if the diameter = 48cm and height =7cm
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the costliest 20 rupees
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ANSWER:-⤵️⤵️
Radius of pillar=24cm
Height of pillar=7cm
CSA of pillar=2*pie*r*h
2*22/7*24*7
=44*24=1056cm^2
Now, Area of 15 pillars
=15×1056=15840cm^2
Now, Cost of painting 1m^2=2.50
So cost of painting 1cm^2=250
Cost of painting 15 pillars=250×15840cm
=Rs3960000
HOPE IT HELPS YOU✔✔✌✌
Radius of pillar=24cm
Height of pillar=7cm
CSA of pillar=2*pie*r*h
2*22/7*24*7
=44*24=1056cm^2
Now, Area of 15 pillars
=15×1056=15840cm^2
Now, Cost of painting 1m^2=2.50
So cost of painting 1cm^2=250
Cost of painting 15 pillars=250×15840cm
=Rs3960000
HOPE IT HELPS YOU✔✔✌✌
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