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MATHEMATICS

JAMB 2010 - Question 33

Mathematics 2010 JAMB Past Questions - Question 33: A cylindrical pipe 50 m long with radius 7m has one end open.What is the total surface area of the pipe ?

A cylindrical pipe 50 m long with radius 7m has one end open.What is the total surface area of the pipe ?

A: 700πm

B: 98πm

C: 350πm

D: 749πm

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Correct Answer

Explanation

Total suface area of cylindrical pipe = area of circular base + curved surface area= πr2 + 2πrh= π x 7sup2 + 2π x 7 x 50= 49π +700π = 749πmsup2