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

749\(\pi\)m²

700\(\pi\)m²

350\(\pi\)m²

98\(\pi\)m²

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Leah300

3 years ago

The is wrong, the formula is 2πrl+2πr^2

MathsKiller

6 years ago

A cylindrical pipe 50cm long with radius 7m has one end open. What is the total surface area of the pipe?
A. 749πm2
B. 700πm2
C. 350πm2
D. 98πm2
Solution=Πr^2+2Πrh
=Π×(7cm)^2+2Π×7cm×(5/100)cm
=(49Π+7Π)cm^2
=56Πcmsquared.
OR. The 5cm in the question should
changed to 5m.Then the
question together with the
answer 749Πcmsquared will
become correct.