If the curved surface area of a cylindrical pipe is 44,000 cm2 and its diameter is 5 cm, find its length. (Take π = )
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Correct answer: D
Explanation
The correct answer is Option 4 i.e. 28 m.
Curved surface area(CSA) = 2πrh
Diameter = 5 cm ⇒ radius = 2.5 cm
⇒ 44000 = 2 × × 2.5 × h
⇒ h = 2800 cm or 28 m