Q. 234.5( 2 Votes )
If the diameter o A. 
B. 
C. 
D. 
Answer :
Curved surface area of a cylinder = 
Diameter = 28 cm ⇒ radius = 14 cm
⇒ Curved surface area = 2×
× 14 × 20
= 44 × 40 =1760 cm2
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