Answer: 24 inches.
Explanation:
To find area of triangles, you can use the following formula:
, where b is your base and h is your height.
You have the area and the height, so you can solve for the base:
![408 = 34b/2](https://img.qammunity.org/2021/formulas/mathematics/middle-school/hyytwu5zo6wp6gk97lpxo0i4r7359e0d2a.png)
Multiply both sides by 2:
![816 = 34b](https://img.qammunity.org/2021/formulas/mathematics/middle-school/vy0h4cyo1qhrup2f51nl3619jzb6oz65fj.png)
Then, divide both sides by 34 to get your base.