A solid cylinder of radius 7cm is 10 cm long. Find its to...
A solid cylinder of radius 7cm is 10 cm long. Find its total surface area.
70πcm2
189πcm2
210πcm2
238πcm2
Correct answer is D
S = 2πr2+2πrh
= 2πr(r+h)
= 2π(7)(7+10)
= 238πcm2
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