Answer:
![c=15](https://img.qammunity.org/2022/formulas/mathematics/high-school/1dyt49vef1jhl18lfbsi3ee929ws8fk62t.png)
Explanation:
You can use Pythagoras theorem to find the value of c
Formula to find the hypotenuse:
![c=\sqrt{a^(2)+b^(2) }](https://img.qammunity.org/2022/formulas/mathematics/middle-school/djsg15413hhyk5t96ncb1cuozwcdf55qqb.png)
The value of a in the formula will be the height & the value for b in the formula is the base.
Now, add the values in the formula:
![c=\sqrt{9^(2)+12^(2) }](https://img.qammunity.org/2022/formulas/mathematics/middle-school/28atzrk49df5bl1z26i5d5xc2zquqvjn6p.png)
![c=√(81+144 )](https://img.qammunity.org/2022/formulas/mathematics/middle-school/sbirspc8ca1q0a5ugfop2gtzs68c9arvpx.png)
![c=√(225)](https://img.qammunity.org/2022/formulas/mathematics/middle-school/71if83w0ws0w6gb3ikpmpzcxh4mmsjaeh8.png)
![c=15.96871942](https://img.qammunity.org/2022/formulas/mathematics/middle-school/bi1zdic4qru7m8kj6hh1lsyevqclwuuwlc.png)
You can simply say that:
![c=15](https://img.qammunity.org/2022/formulas/mathematics/high-school/1dyt49vef1jhl18lfbsi3ee929ws8fk62t.png)
I hope this helps :)