Answer:
The length of a side of the base is
![5\ in](https://img.qammunity.org/2020/formulas/mathematics/high-school/erzft7xpjrytp0hi0jl8qohgqpictpjh5e.png)
Explanation:
we know that
The volume of a rectangular prism is equal to
![V=Bh](https://img.qammunity.org/2020/formulas/mathematics/college/1z8biyc5dxidzjd7gaahhzli35rckolci0.png)
where
B is the area of the base of the prism
h is the height of the prism
we have
![V=175\ in^(3)](https://img.qammunity.org/2020/formulas/mathematics/high-school/xys57lsi0z1xa4ckv8andi5y3eymznwxh0.png)
![h=7\ in](https://img.qammunity.org/2020/formulas/mathematics/high-school/jvv0zxqcu68lte33et5hy0v6sk4ov8kf7x.png)
Substitute the values and solve for B
![175=B(7)](https://img.qammunity.org/2020/formulas/mathematics/high-school/ih22gunh9qvegs360z3u4ud3h9f7ksnafq.png)
![B=175/(7)](https://img.qammunity.org/2020/formulas/mathematics/high-school/c1prjf361x83bzt9unnzonehrmzyo6xgtz.png)
![B=25\ in^(2)](https://img.qammunity.org/2020/formulas/mathematics/high-school/kbr513mtr2yvwi4i0vqml7yvnyjwd0n3ui.png)
Remember that the base is a square
so
![25=b^(2)](https://img.qammunity.org/2020/formulas/mathematics/high-school/qiu0yau3bjk6z9dqtyem1nn4754sjb5725.png)
![b=5\ in](https://img.qammunity.org/2020/formulas/mathematics/middle-school/m2mdaywmwrdhle9gtxaec3nwrxdmlhpvhp.png)