Question

find the curved surface area and volume of a cilinder in which hight is 56 cm and base radius is 35 cm
​

Answer 1

Step-by-step explanation:

Given a cylindrical pillar diameter of 56cm and its height is35m.

Then radius of pillar =

2

56

cm=

100

28

m=0.28m

Then curved surface area of pillar =2πrh=2×

7

22

×0.28×35=61.60m

2

Then the curved surface area of 16 pillars =61.60×16=985.60m

2

Given the cost of painting the curved surface area of all pillar at the rate of Rs5.50 per 1sqm

Then the cost of paining of 16 pillars =985.60×5.50=5420.80 Rs

Answer 2

Answer:

Step-by-step explanation:

Given a cylindrical pillar diameter of 56cm and its height is35m.

Then radius of pillar =

2

56

​

cm=

100

28

​

m=0.28m

Then curved surface area of pillar =2πrh=2×

7

22

​

×0.28×35=61.60m

2

Then the curved surface area of 16 pillars =61.60×16=985.60m

2

Given the cost of painting the curved surface area of all pillar at the rate of Rs5.50 per 1sqm

Then the cost of paining of 16 pillars =985.60×5.50=5420.80 Rs