find the volume of both figures in cubic centimeters rounded to the nearest tenth.

We are given a figure and we are asked to determine its volume. The given figure is a straight prism, therefore, the volume is given by:
[tex]V=A_bh[/tex]Where:
[tex]\begin{gathered} A_b=\text{ area of the base} \\ h=\text{ height} \end{gathered}[/tex]Substituting the values we get:
[tex]V=(20\operatorname{cm})(5\operatorname{cm})[/tex]Solving the operation:
[tex]V=100\operatorname{cm}^3[/tex]Therefore, the volume of figure A is 100 cubic centimeters. The same procedure can be used to determine the volume of figure B.