Its total area should be divided into three sides and two bottoms.

Side: 7.2*5, 7.2*5, 7.2*6.

The area of the side is 7.2*5+7.2*5+7.2*6 square centimeters.

Base: Root sign (5 2-3 2) = 4-This is to calculate the height of the base triangle by using the Pythagorean theorem of right triangle.

The area of the bottom surface is 4*6/2 (triangle area formula) *2 (two bottom surfaces) square centimeters.

Then the total area of this prism is 7.2 * 5+7.2 * 5+7.2 * 6+4 * 6/2 * 2 =139.2 square centimeters.

cylinder

Its total area is divided into two bottom surfaces and 1 side surfaces.

Side: When the side is unfolded, it is a rectangle. The bottom circumference is long and the cylinder height is wide.

Total side area: 9PI * 6m2.

Bottom: The bottom is round. It is known that its circumference is 9pi, and the circumference of the circle is 2*pi*r, so the radius of this circle is 4.5. Then the area of the circle is pi * r 2.

The total area of the bottom surface is: pi * 4.5 2 * 2 (two bottom surfaces) square meters.

So the total area of this cylinder is:

9PI * 6+PI * 4.5 2 * 2 = 94.5 PI square meters.