Question

determine the total surface area of the cylinder

Answer 1

Question:

Solution:

Remember that the surface area of the cylinders is given by the following formula:

$S\text{ = 2}\pi rh+2\pi r^2$

where r is the radius of the cylinder and h is its height. Now, in this case, we have that r = 4/2 = 2 and h = 12. Then, replacing this data in the previous equation, we obtain:

$S\text{ = 2}\pi(2)(12)+2\pi(2^2)\text{ = 56}\pi\text{ = 175.93}$

then, the correct answer is:

$S\text{ = 2}\pi(2)(12)+2\pi(2^2)\text{ = 56}\pi\text{ = 175.93}$