Question

plzzz anyone help me in this➡️ question no.5.....plzzz friends ☺☺☺☺☺☺☺☺☺☺

Answer 1

HEY FRIEND ♥️ ☺️
HERE'S UR ANSWER....
Diameter = 50 cm
Radius= 50/2=25cm
=25/100=1/4 m
Height= 4m
Curved surface area = 2pie rh
= 2×22/7×1/4×4
= 6.28 m sq.
CSA of 1 pillar = 6.28m sq.
CSA of 20 pillars= 6.28×20
= 125.6 m sq.
Cost of cleaning per m sq. = 14Rs
Cost of cleaning 125.6 m sq. = 14×125.6
= 1758.4 Rs ANSWER..

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@MITHU ♥️ ♥️ ♥️