What is the surface area of a cylinder with the radius of 3 and a height of 4 in the terms of pi?
+23254 Since the top and the bottom of the cylinder are circles, you can use the formula: A = pi · r2 to find those areas.
The area of the side can be found by using the formula: A = 2 · pi · r · h.
The total area will be the sum of the three answers (top + bottom + side).
Top = pi · 32 = 9pi
Bottom = pi · 32 = 9pi
Side = 2 · pi · 3 · 4 = 24pi
Total = 9pi + 9pi + 24pi = 42pi
