SA: 2[tex]\pi[/tex]rh+2[tex]\pi r^2[/tex]
1. Find the radius. R = 1/2D
12 x 1/2 = 6
Radius is 6.
2. Plug in radius and height into equation.
SA: 2(3.14)(6)(10) + 2(3.14)(6^2)
3. Solve.
6 x 10 = 60
60 x 3.14 = 188.4
188.4 x 2 = 376.8
36 x 3.14= 113.04
113.04 x 2 = 226.08
4. Add them together.
376.8 + 226.08 = 602.88
Answer: 602.88 square centimenters
