Answer:
D.) 10.4 yd
Explanation:
In the given figure the alternate angles are equal and hence a right angle triangle with one of its angle as 30 degree is formed .
For angle 30 degrees adjacent side is 18 yard and opposite side is x.
Tan of an angle is equal to
![(opposite)/(adjacent)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/q5e47xl7ujja45gw3xdv0fvjq85g04yufu.png)
![Tan 30=(x)/(18)](https://img.qammunity.org/2020/formulas/mathematics/high-school/fmdqp71ui7idrwrae4iurbqea0oyowkr0b.png)
x=Tan 30 (18)
x= 10.39
x= 10.4 yard (rounded to tenth place)
Option D is the right answer.