The area of each of the two circles is \(\pi r^2\)and the area of the rectangle is \(2 \pi r \times h\). The surface area of a cylinder is the area of each of its faces added together.

Enormous polygon patterns in rock lie dozens of meters below Mars’ surface, ground-penetrating radar data suggest. Similar patterns develop on the surface in Earth’s polar regions when icy ...

A cylinder is not a prism because the circle is not a polygon. Image caption, The total surface area of a prism is made up of the areas of the two end faces and the rectangles that join them.

A space probe sent to Mars by China discovered strange polygon structures buried underneath the Red Planet's surface ... Mars' biggest impact basins. The area was first visited by Viking 2 ...

China's Mars rover has uncovered underground polygon structures buried beneath the Red Planet's surface — and it looks ... bodies of water on or around the area where they were found.