Question 1141749
For the cylinder alone:
{{{ A[1] = pi*2^2*10 }}}
{{{ A[1] = 40pi }}}
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For the 2 ends:
{{{ A[2] = 2*pi*2^2 }}}
{{{ A[2] = 8pi }}}
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{{{ A[1] + A[2] = 48pi }}}
The answer is B)