A cylindrical pillar is 50cm in diameter and 3.5m in height. Find the cost of painting the curved surface of the pillar at the rate of Rs. `12. 50\ p e r\ m^2dot`

Explanation

Here, we have to find the curved surface area of a cylindrical pillar.

Curved Surface area of the cylinder, `A = 2pirh = pidh`

Here, `d = 50cm = 1/2m`

`h = 3.5m`

So, `A = 22/7**1/2**3.5 = 5.5m^2`

Cost of painting the curved surface area per `m^2 =12.50`

So, required cost `=12.50**5.50 = 68.75 `

So, required cost will be `Rs``68.75`.