CBSE Class 9 Answered
circumference of base of a cylinder is 132cm. the sum of radius and height of the cylinder is 41cm. find the cost of polishing the outer surface of cylinder at rate of RS10 per square metre.
Asked by | 06 Feb, 2014, 08:57: PM
Expert Answer
Circumference of the base of a cylinder is
Thus,
Also, given that,
The curved surface area of a cylinder is given by,
That is,
Cost of polishing the outer surface per square meter is Rs.10.
Thus the cost of polishing the outer surface of cylinder =
Answered by | 07 Feb, 2014, 09:50: AM
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