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What is the total surface area of a closed cylinder of height 10cm and diameter…

What is the total surface area of a closed cylinder of height 10cm and diameter 7cm? [Take (pi = frac{22}{7})]
  • A.
    77cm2
  • B.
    227cm2
  • C.
    297cm2
  • D.
    374cm2
Correct Answer: Option C
Explanation

T.S.A of s closed cylinder = (2pi r(r+h)\
=frac{2}{1}times frac{22}{7} times frac{7}{2}left(frac{7}{2}+frac{10}{1}right)=frac{22}{1}left(frac{27}{2}right)=27time 11=297cm^2)