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CBSE Class 10 Answered

A wooden article was made by scooping out a hemisphere from each end of a cylinder. If the height of the cylinder is 15cm, and the base is of diameter 14 cm, find the total surface area of the article when it is ready.
Asked by | 12 Feb, 2012, 04:20: PM
answered-by-expert Expert Answer
Total surface area of the given solid = CSAcylinder + CSAboth hemispheres
 = (2pie*r*h) + 2(2pie*r*r)
= 2 * pie * 7 * 15 + 2*2*pie*7*7
= 660 + 616
= 1276cm2
Answered by | 13 Feb, 2012, 10:29: AM

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