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  • A cylindrical pillar is 50 cm in diameter and 3.5 metre in height find the cost of painting the curved surface of the pillar at rate of rupees 12.50 per metre square with steps?

A cylindrical pillar is 50 cm in diameter and 3.5 metre in height find the cost of painting the curved surface of the pillar at rate of rupees 12.50 per metre square with steps?

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best_answer

Diameter of the pillar = 50 cm

Radius of the pillar = 25 cm = 0.25 m

Height of the pillar = 3.5 m

Curved surface area (CSA) of cylinder = 2pi rh

CSA ; of; pillar= 2 imes frac227 imes 0.25, m imes 3.5, m\ =5.5, m^2

Cost of painiting 1 m2 = Rs 12.50

Cost of painiting 5.5 m2 =

Rs., 12.50 imes 5.5\ Rs., 68.75

Posted by

Deependra Verma

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