Question

Find the cost of painting 20 cylindrical pillars of an institution at the rate of ₹3 per m ifsquare
the radius and the height of each pillar are 36 cm and 3.5 m respectively.​

Answer 1

Answer:

curved surface area =2πrh

Step-by-step explanation:

1 meter =100cm

36cm = 36/100=0.36m

radius=0•36

height=3•5

a/q

(2*22/7*0•36*3•5) *3

1980/25=79.3

rate of 3 per meter = 79.3*3

237.9 rupee

Answer 2

curved surface area =2πrh

Step-by-step explanation:

1 meter =100cm

36cm = 36/100=0.36m

radius=0•36

height=3•5

a/q

(2*22/7*0•36*3•5) *3

1980/25=79.3

rate of 3 per meter = 79.3*3

237.9 rupee