JAMB Mathematics 2010 Objective — Question 33
Question 33 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2010 Objective paper, with the correct answer and a full explanation.
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33. A cylindrical pipe 50 m long with radius 7 m has one end open. What is the total surface area of the pipe? A. 749 pi m2 B. 700 pi m2 C. 350 pi m2 D. 98 pi m2
- A. 749 pi m2Correct
- B. 700 pi m2
- C. 350 pi m2
- D. 98 pi m2
Explanation
If one end is closed: T.S.A = 2 pi r h + pi r^2 = (2xpix7x50) + (pix7^2) = 700pi + 49pi = 749 pi m2.
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