Question

An iron pillar has some part in the form of right circular cylinder and remaining in the form of the right circular cone. the radius of the base of the cone and cylinder is 8cm. find the cost of the canvas of the tent at the rate of Rs. 45 per m^2​

Answer 1

Answer:

Step-by-step explanation:

Volume of the pillar = Volume of the cylindrical part + Volume of conical part

Volume of a Cylinder of Radius "R" and height "h" =πR

2

h

Volume of a cone =

3

1

​

πr

2

h  where r is the radius of the base of the cone and h is the height.

Hence, Volume of the pillar =(

7

22

​

×8×8×240)+(

3

1

​

×

7

22

​

×8

2

×36)=50688cm

3

If one cu cm wieighs 7.8 grams, then 50688cm

3

 weighs 50688×7.8=395366.4 grams  or 395.37kg

Answer 2

Step-by-step explanation:

an an iron pillar has some part in the of right circular cylinder repairing in the form of a right circular cone the radius