help please

A ring-toss toy is composed of a rectangular prism on top of a cylinder. The rectangular prism is completely fill with water. The dimensions of the rectangular prism are shown in the diagram.

a) 90cm3
b) 208cm3
c) 29cm3
d) 480cm3​

help please A ringtoss toy is composed of a rectangular prism on top of a cylinder The rectangular prism is completely fill with water The dimensions of the rec class=