Given internal radius (r_{1}) = 10/5 = 2cm

Height of cylindrical vessel (h) =10.5cm

Outer radius of cylindrical vessel (l_{2}) = 7/2 = 3.5cm

Length of cone (l) = 6cm.

(i) Volume of water displaced = volume of cone

(ii) Volume of water left in cylinder = volume of Cylinder – volume of cone

= 825 - 77 = 748cm

Volume of water left in cylinder = 748cm^{3}