InterviewSolution
Saved Bookmarks
| 1. |
The surface area of two spheres are in the ratio 9 : 16. Their volumes will be in the ratio1). 3 : 642). 9 : 273). 27 : 644). 64 : 729 |
|
Answer» Surface area of a SPHERE = 4πr2 Volume of a sphere $(= \FRAC{4}{3}\pi {r^3})$ Ratio of surface area = (ratio of radius)2 Given, surface area of TWO spheres are in the ratio 9 : 16. ⇒ ratio of radius = 3 : 4 Ratio of volumes = (ratio of radius)3 ⇒ Ratio of volumes $(= {\left( {\frac{3}{4}} \right)^3} = 27:64)$ |
|