Question

a large hall has 25 pillars which are cylindrical in shape. the height of each pillar is 14m and the radius of the base is 50cm. these pillars are to be painted. if one can of paint covers 100m2 , find the total number of cans of paint require

Answer 1

Step-by-step explanation:

We get the width of the pillar by getting the circumference of the top of one pillar.

Convert the radius into metres=28/100=0.28m

Circumfrence =22/7×2×0.28=1.76m

The curved surface area=1.76×4=7.04m2

For the 25 cylinders=25×7.04=176m2