We will proceed as follows:
*The volume of a rectangular solid is given by the expression:
![V=l\cdot h\cdot w](https://img.qammunity.org/2023/formulas/mathematics/college/kjr0k38i7fh6g5fnsc3hhpyko769fsunly.png)
Therefore, it's volume will be:
![V=(16)(20)(15)\Rightarrow V=4800](https://img.qammunity.org/2023/formulas/mathematics/college/2fo10g5msfxcnpl2s4lap99uv49q97loeb.png)
So, it's volume equals 4800 cm^3.
*The surface area of a rectangular solid is given by the expression:
![A=2(wl+hl+hw)](https://img.qammunity.org/2023/formulas/mathematics/college/i3o3d4r0acr2fwcl7gj888mnddmtixp3nk.png)
So, its surface area will be:
![A=2((15)(16)+(20)(16)+(20)(15))\Rightarrow A=1720](https://img.qammunity.org/2023/formulas/mathematics/college/wvgzwkv0fgqt6ir3q0gs7vu8aaxsd4zgkf.png)
Therefore, its surface area equals 1720 cm^2.