Answer:

Step-by-step explanation:
Given that,
The height of the tree, h = 14 ft
The height of the shadow, b = 16 ft
We need to find the angle of elevation of the sun from the ground. Let the angle be θ. We can use trigonometry to find it. So,

So, the required angle of elevation of the sun is equal to
.
The answer is D, 5.29, due to Pythagoras's theorum
10, if you multiply 2 by 10 you will get 20, 1 times 10 is 10.
T + b = 898
t = b - 52
(b - 52) + b = 898
2b - 52 = 898
2b = 898 + 52
2b = 950
b = 950/2
b = 475 <=== cost of the bench (b)