A hollow cylindrical pipe is 1.5 m long. Its outer and inner diameter are 12 cm and 10 cm
respectively.
(1) What is the radius of external and internal cylindrical pipe?
(ii) What is the total surface area of Internal pipe?
(111) What is the curved surface of external pipe?
(iv) What is the area of shaded region?
(v)If cost of painting for 1m2 is Rs 5.5 then find the cost of painting in total surface area of external
pipe.
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