Sqrt28 = 5.2915~
largest integer below = 5
(round down)
Answer:
Future requirement of water = 115,517 mega-liters
Step-by-step explanation:
Given:
Current requirement of water (C) = 48,000 mega-liters
Increasing rate per year (g) = 5% = 0.05
Number of year (n) = 18 years
Find:
Future requirement of water = ?
Computation:

Future requirement of water = 115,517 (Approx) mega-liters
The sun is 332608.6957 times bigger than earth, or 3.326086957*10^5 times bigger.