Question

A building has 8 cylindrical pillars of radius
0.5 m and height 6.3 m. If these pillars are to
be painted at the rate of 15 per m², what will
be the cost of painting all of them?​

Answer 1

Given, diameter =1m, radius =
2
diameter
​
=
2
1
​

height of cylinder =4.2 m

Curved surface area of cylinder =2πrh=2π×
2
1
​
(4.2)=13.2m
2

∴8× right circular cylinder =8×13.2=105.6m
2


∴ cost of painting pillar at the rate of Rs. 24 per m
2
=24×105.6= Rs.2534.4

Answer 2

Answer:

Step-by-step explanation: