Rain water, which falls on a flat rectangular surface of length 6 m and breadth 4 m is transferred into a cylindrical vessel of internal radius 20 cm. What will be the height of water in the cylindrical vessel if a rainfall of 1 cm has fallen?
Volume of rainfall = lbh
= 6 × 4 × 0.01
= 0.24 m3
∵ Volume of water in cylindrical vessel = volume of rainfall
∴ πr2h = 0.24
⇒ h ≈ 1.91m = 191cm