Question

Attempt the following:
1) The radius of the base of a cylindrical pillar of a building is 28 cm and its height is 4.5 m. Rate of
painting is 20 per sq.m. to paint this pillar. Find the cost of painting 5 such pillars?
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Answer 1

Answer:

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Answer 2

Answer:

r=28cm=0.28M

h=4.5m

Curved surface area=2πrh

=2*22/7*0.28*4.5

=44*0.4*4.5

=79.2Sq.m3

Rate of painting 1Sq.m= 20 rs

=79.2*20

=1584rs

cost of 5 pillar =5*1584

=7920Rs.