Question

Which is closest to the surface area of a cylinder with measurements as shown?

Answer 1

The surface area of a cylinder is calculated as follows:

`A=2\pi rh+2\pi r^2`

where r is the radius and h is the height of the cylinder. Substituting with r = 4 units and h 5 units, we get:

`\begin{gathered} A=2\cdot\pi\cdot4\cdot5+2\cdot\pi\cdot4^2 \\ A=40\pi+32\pi \\ A=72\pi \\ A\approx226\text{ }square\text{ units} \end{gathered}`