The curved surface area of a cylindrical pillar is 264 m2 and its vol…

Question

The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3 ( Taking = 227 ). Find the ratio of its diameter to its height

Accepted Answer

Option D. 7 : 3. Answer & Solution Answer: Option D Solution: & 2 rh = 264 . . . . . . ( i ) & r^2h = 924 . . . . . . ( ii ) & On dividing: 2 rh r^2h = 264924 & 2/r = 264924 & r = 924 × 2264 & r = 7 cm & Diameter = 2r = 2 × 7 = 14 cm & Putting, r = 7 in equation ( i ) & 2 rh = 264 & h = 264 × 72…