-
If S1 and S2 be the surface area of a sphere and the curved surface area of the circumscribed cylinder respectively, then S1 is equal to
-
-
3 S2 4 -
1 S2 2 -
3 S2 3 - S2
-
Correct Option: B
S1 = surface area of sphere = 4πr²
S2 = curved surface of the circumscribed cylinder
= 2πRH = 2π (2r) (2r) = 8πr²
| ⇒ | πR³= | πR³H | ||
| 3 | 3 |
| ∴ | = | = | |||
| S2 | 8πr² | 2 |
| ⇒ S1 = | S2 | |
| 2 |
