There are 20 cylindrical pillar in a building each having a diameter of 50cm and height 4cm. find the cost of cleaning them at 14 rupees per meter square.
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Answered by
29
r=25cm
h=4cm
csa=2πrh
=2*22/7*25*4
=4400/7cm²
csa of all pillar = 4400/7*20
=88000/7 cm²
rate=RS.14per me
requared cost=88000/7*14
=RS 176000
h=4cm
csa=2πrh
=2*22/7*25*4
=4400/7cm²
csa of all pillar = 4400/7*20
=88000/7 cm²
rate=RS.14per me
requared cost=88000/7*14
=RS 176000
login56:
wrong??
nothing is wrong
hmm
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Answered by
4
Answer:
THE HEIGHT IS 4m YOU HAVE WRITTEN WRONG
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