Question 965449
.
The side of the cylinder will be formed by a rectangle:
{{{(Circumference)}}}{{{x}}}{{{(height)}}}
.
{{{Circumference=(pi)(diameter)=2(pi)(radius)}}}
{{{Height=(2)(diameter)}}}={{{4(radius)}}}
.
So the rectangle will be:
{{{2(pi)r}}}{{{x}}}{{{4r}}}
.
The correct answer is D.