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ICSE Class 8 Answered

The volume of the right circular cylinder is 308 cm^3 and its height is 8cm. Find ( i) the radius (ii) the area of its curved surface. 
Asked by Cl_narayan | 31 Aug, 2019, 04:47: PM
answered-by-expert Expert Answer
Volume space of space cylinder space equals space 308 space straight m cubed
πr squared straight h equals 308
22 over 7 cross times straight r squared cross times 8 equals 308
straight r equals 7 over 2 straight m
curved space SA space equals space 2 πrh equals 2 cross times fraction numerator 7 cross times 22 over denominator 2 cross times 7 end fraction cross times 8 equals 176 space sq. straight m
Answered by Arun | 31 Aug, 2019, 05:23: PM

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