We can't see what you're trying to say.
You can use this to help you. label the triangle like the picture and use the equations. I hope this helps.
Answer:

Step-by-step explanation:
<u>Given fraction</u>:



Rewrite 9 as 3 · 3:

Cancel the common factor y in the first fraction and the common factor 3 in the second fraction:


7,000 ft
area of triangle formula=1/2*base*height