PROBLEM SOLVING - tempat bertanya PR Kaskuser (SD, SMP, SMA) - Part 3
(1a). http://latex.codecogs.com/gif.latex?%5C%5C%5Ctext%7Basumsi%20%3A%20volume%20bola%20%3D%20volume%20gas %7D%5C%5C%5C%5C%20%5Csum%20F%3Dma%5C%5C%5C%5C%20-w_%7Bbola%7D-w_%7Bgas%7D+F_%7Barchimedes%7D%3D%5Cleft%20%28%20m_%7Bbola%7D+m_%7Bgas%7D%2 0%5Cright%20%29a%5C%5C%5C%5C%20-m_%7Bbola%7D%7Eg-...