find the cost of painting 20 cylindrical pillars of an institution at the rate of ₹3 per m square if the radius and the height of each pillar are 36cm and 3.5m respectively.
Answers
Answered by
14
Radius=36cm=36/100m
Height=3.5m
After this conversion of cm into m, use the values in finding cylinder area
After finding area multiply it by 20
Now you have area of 20 pillars
Rate=3rs/m^2
Now for finding cost, multiply area of 20 cylinders with the rate given
Answered by
33
Answer:
Answer is ₹475.20
Step-by-step explanation:
Given height of pillar=3.5m
Radius of each pillar=36cm=36/100=0.36m
CSA of pillar=2×22/7×0.36×3.5
CSA =7.92m^
total area of painting=7.92×20=158.40m^
Cost of painting =158.40×3
Cost of painting =₹475.20
Similar questions