Question

in a building there are 30 cylinder kal pillar the radius of each pillar is 42 and height is 7 metre find the total cost of painting the curved surface area of all pillars at rupees 10 per metre square​

Answer 1

Answer:

Rs 554400

Step-by-step explanation:

Radius = 42m

Height= 7m

CSA=2πRH

=2*22/7*42*7

=2*22*42

= 1848m^2

CSA of 30 cylindrical pillars= 30*1848

= 55440m^2

Cost of painting 1m^2= Rs 10 Cost of painting 55440m^2= 55440*10

=Rs554400

Please mark it as the BRANIEST!!