SOLUTION: there are 20 identical solid hemisphere . the curved surface and the flat surface of each hemisphere are to be painted red and yellow respectively find the ratio of the amount of r

Algebra ->  Surface-area -> SOLUTION: there are 20 identical solid hemisphere . the curved surface and the flat surface of each hemisphere are to be painted red and yellow respectively find the ratio of the amount of r      Log On


   

Question 1125791: there are 20 identical solid hemisphere . the curved surface and the flat surface of each hemisphere are to be painted red and yellow respectively find the ratio of the amount of red paint needed to the amount of yellow paint needed
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Each curved surface has an area of 2pi*r^2
Each flat surface has an area of pi*r^2