2012 · Q78
If the ratio of the diameters of two spheres is 3 : 5, then what is the ratio of their surface areas?
Elementary MathematicsMensuration
- A9 : 25
- B9 : 10
- C3 : 5
- D27 : 125
Explanation
Surface areas scale as the square of diameters: 9:25.
If the ratio of the diameters of two spheres is 3 : 5, then what is the ratio of their surface areas?
Explanation
Surface areas scale as the square of diameters: 9:25.