Question

A cylindrical pillors is 50cm its diameter and 420cm is height find the cost of painting the curved surface area of the pillor at the rate ho rs 2 /cm ^2

Answer 1

Step-by-step explanation:

Let, the daimeter of pillors=50cm.

then, it's radius =50/2 =25 cm

and it's height =420 cm

so, curved surface area of pillors =2πrhsq units.

==2×22/7×25×420

==44×25×60.

===66000cm^2.

since, the rate of painting the pillors =2/cm^2

====66000×2=132000Rs.

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