Saved Bookmarks
| 1. |
If the diameter of a sphere is d and curved surface area S, then show that S=π d²Hence find the surface area of a sphere whose diameter is 4.2 cm |
|
Answer» as we know surface area of a sphere= 4πr^2and d= 2rso S= π (2r)^2= πd^2now the value of D = 4.2cmso surface area = 22/7*4.2*4.255.44cm^2 |
|