A cylindrical pipe 50m long with radius 7m has one end op...
A cylindrical pipe 50m long with radius 7m has one end open. What is the total surface area of the pipe?
749πm2
700πm2
350πm2
98πm2
Correct answer is A
Total surface area of the cylindrical pipe = area of circular base + curved surface area
= πr2 + 2πrh
= π x 72 + 2π x 7 x 50
= 49π + 700π
= 749πm2