Answer:
12.04
Explanation:
Well to solve for the unknown side "c" we need to use the Pythagorean Theorem formula,
![a^2 + b^2 = c^2](https://img.qammunity.org/2021/formulas/mathematics/middle-school/yenc9dfxchbh2erecctna2kggnymsvqrbi.png)
We already have a and b which are 8 and 9 so we plug them in.
![(8)^2 + (9)^2 = c^2](https://img.qammunity.org/2021/formulas/mathematics/college/s8aa2duvyv81dexv6u4m7m2utyjaf1gcf8.png)
64 + 81 = c^2
145 = c^2
c = 12.04 rounded to the nearest hundredth.
Thus,
the unknown side is about 12.04.
Hope this helps :)