The angle from which helicopter take off approximately equals 11.30993247;
Answer:

Step-by-step explanation:

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Answer:
b. 82m³
Step-by-step explanation:

150 / 200 = 0.75
0.75 = 75%
150 of anything is 75% of 200 of the same thing.
17 are older than 16 years old and 12 are taller than 170 cm