Answer:

Step-by-step explanation:

](https://tex.z-dn.net/?f=%5Bx%28x%E2%88%922%29%2B6%28x%E2%88%922%29%5D%28x%E2%88%923%29)



<h3>Hope it is helpful....</h3>
Answer: 41.6%
Step-by-step explanation:
You divide the amount of trees 40ft or taller (10) by the total number of trees (24) so 10/24 = .416 (41.6%)
The appropriate formula is C = 2*pi*r.
Here, C = 2*pi*(50 units) = 100*pi units (answer)
3 (k-12) = k-30
3k - 36 = k - 30
3k - k = -30 + 36
2k = 6
k = 3