a cylindrical tank has a capacity of 6160 cu cm. find its depth if its radius is 14 m. calculate the cost of painting its curved outer surface at the rate of rs 3 per square meter.
its urgent.....pls help!!!
qais:
i think the volume is in cubic metre...am i right???
Answers
Answered by
597
As the unit of volume given in the question is too small so considering it 6160 m³
Volume of cylindrical tank = π r²×h
⇒6160= π×(14)²×h
⇒h = 10 m
now, the area of curved surface= 2π r×h =2π ×14×10 =880 m²
cost of painting that surface = Rs 3×880 = Rs 2640
Volume of cylindrical tank = π r²×h
⇒6160= π×(14)²×h
⇒h = 10 m
now, the area of curved surface= 2π r×h =2π ×14×10 =880 m²
cost of painting that surface = Rs 3×880 = Rs 2640
Please check question carefully then answer.
Volume of cylinder=6160 cu.cm=.00616cm.m , h=.00001m
Mr. Qais . sorry!!
see my consideration
that much volume with radius 14 m is practically impossible
so i'm using little bit of logic
so i'm using little bit of logic
Answered by
132
Answer:
Step-by-step explanation:
The volume given in question is too small. So,volume is 6160m³.
Volume=πr²h
6160=22/7*14*14
6160*7/22*14*14=10 m.
Curved surface=2πrh
2*22/7*14*10=880.
Cost of painting=Rs.3
3*880=2640
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