A hemispherical vessel of $300 \mathrm{~mm}$ diameter is completely filled with oil and water. If the oil layer is $50 \mathrm{~mm}$ deep on the top, the volume of water in the vessel in litres is
(A) 1.27
(B) 3.73
(C) 7.07
(D) 14.14
A hemispherical vessel of $300 \mathrm{~mm}$ diameter is completely filled with oil and water. If the oil layer is $50 \mathrm{~mm}$ deep on the top, the volume of water in the vessel in litres is
(A) 1.27
(B) 3.73
(C) 7.07
(D) 14.14