Question

in a buliding there are 24 cylindrical pillars.thr radius of each pillar is 28 cm and height is 4m.find the total cost of painting the curved surface area of all pillars at the rate of ₹8pre m​

Answer 1

Answer:

189.15

Step-by-step explanation:

total area=no of pillars x pi x r^2 x h

                =24 x( pi x 0.28 x 0.28 x 4)=23.6

total cost =23.6 x 8rs

               =189.15

Answer 2

Answer:

Step-by-step explanation: