Answer:
81 + 6 + 1 = 88 if that's your question
Step-by-step explanation:
Answer:
Part 5) The length of the ski lift is 
Part 6) The height of the tree is 18.12 m
Step-by-step explanation:
Part 5)
Let
A -----> Beginning of the ski lift
B -----> Top of the mountain
C -----> Base of mountain
we have


----> by supplementary angles
Find the measure of angle B
Remember that the sum of the interior angles must be equal to 180 degrees

substitute

Applying the law of sines

substitute



Par 6)
see the attached figure with letters to better understand the problem
<u><em>Applying the law of sines in the right triangle BDC</em></u>
In the right triangle BDC 20 degrees is the complement of 70 degrees

-----> equation A
<u><em>Applying the law of sines in the right triangle ABC</em></u>
In the right triangle ABC 50 degrees is the complement of 40 degrees

-----> equation B
Equate equation A and equation B and solve for x

<u><em>Find the value of BC</em></u>


therefore
The height of the tree is 18.12 m
The area of the shaded part is: 42.14 ft² .
<h3>Area of Square</h3>
Area = s²
<h3>Area of Quarter Circle </h3>
Area = 1/4πr²
Thus:
Area of the shaded part of the figure = area of square - area of quarter circle
Area of shaded part = s² - 1/4πr²
s = 14 ft
r = 14 ft
Substitute
Area of shaded part = 14² - 1/4(3.14)(14²)
= 42.14 ft²
Therefore, the area of the shaded part is: 42.14 ft² .
Learn more about area of square on:
brainly.com/question/813881
Answer:
10.16 cm.................
....
What...huh?? English please