Answer:
Step-by-step explanation:
Given: Diameter of each pillar= 1.4m
Height= 6m
Cost of painting the curved surfaces of all the pillars at the rate of Rs
First lets find out radius of each pillar.
Radius (r)=
∴ Radius (r)=
Now, finding area of cylindrical pillar.
Formula; Area of curved surface=
⇒ Area of curved surface=
∵ There are four cylindrical pillars.
∴ Curved surface area of four pillar=
Curved surface area of four pillar is 105.6 m²
Next, finding the cost of painting the pillars.
As given, cost of painting is Rs 10 per m².
∴ Cost of painting 105.6 m²=
∴ The cost of painting the curved surfaces of all the pillars is Rs.1056.