Answer:
0.96 inches
Explanation:
The first step is to find the diameter given the circumference. This is the formula for circumference:
![C=\pi d](https://img.qammunity.org/2023/formulas/mathematics/high-school/4mkash3xbv1k0yoiexwvsolvp2d8x0dvan.png)
In terms of d, the formula looks like this:
![d=(C)/(\pi)](https://img.qammunity.org/2023/formulas/mathematics/middle-school/gzyv8o4uyajw4gzbz5yjkbe29e0az87itq.png)
For the softball, the diameter is approximately:
![d=(12)/(\pi) =3.82](https://img.qammunity.org/2023/formulas/mathematics/high-school/bzhd2rir79zr7nqr4rxcb4vi14e8l95f90.png)
For the baseball:
![d=(9)/(\pi ) =2.86](https://img.qammunity.org/2023/formulas/mathematics/high-school/smm1309xtrg16f1nva9tnaxibo7dc74zxi.png)
Find the difference:
![3.82-2.86=0.96](https://img.qammunity.org/2023/formulas/mathematics/high-school/kym9i08cs8b5fq5mcmwfpyfd2ff18mkg0i.png)
The approximate difference in diameters is 0.96 inches!