REET Feb 16 p1, Q99
- Option : B
- Explanation : Given, 2(l + b) = 46
l + b = 23 ... (i)
and l2 + b2 = (17)2 = 289 ... (ii) (By Pythagoras Theorem)
Now, (l + b)2 = 232
⇒ l2 + b2 + 2lb = 529
⇒ 289 + 2lb = 529
⇒ 2lb = 529 - 289 = 240
⇒ lb = 120
⇒ Area = lb =120 sq m.
