To find the volume of a rectangular prism, you use the formula:
\[ \text{Volume} = \text{Area of base} \times \text{Height} \]
In this case, the area of the base is given as \(245 , \text{cm}^2\) and the height (which you can interpret as one of the dimensions of the prism) is given as \(85 , \text{cm}\).
So, the correct expression to calculate the volume would be:
\[ \text{Volume} = 245 , \text{cm}^2 \times 85 , \text{cm} \]
This corresponds to the option:
85 x 245
Thus, this is the expression that can be used to find the volume of the rectangular prism in cubic centimeters.