Question

In a shopping mall there are 24 cylindrical pillars. The 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

₹8 per metre square

Answer 1

WE HAVE TO FIND ITS CSA AND CSA OF CYLINDER IS $2\pi rh$

2*22/7*28*4=704 m^2

total cost=704*8=5632

bro 1 bar cross check kar lena iske csa me aur answer ,I think it is correct