A cube of edge 20 cm is completely immersed in a rectangular vessel containing water. If the dimensions of… · ABC26GN4882
Subject: General Aptitude · Chapter: Volume and Surface Area
A cube of edge 20 cm is completely immersed in a rectangular vessel containing water. If the dimensions of the base of the vessel are 20 cm by 40 cm, the rise in water level will be
(a)2 cm
(b)8 cm
(c)10 cm
(d)14 cm
Answer
Answer (as printed): C
Explanation
Volume increased $=(20)^{3} \mathrm{cm}^{3}=8000 \mathrm{cm}^{3}$. ∴ Rise in water level $=\left(\frac{8000}{20 \times 40}\right) \mathrm{cm}=10 \mathrm{cm}$.