The third one is correct so it would be C.
Just substitute X and Y into the question.
Answer:
n = 0.38 rotation per second
Step-by-step explanation:
The device rotates according to the mathematical equation :
...(1)
Where n is the rotational speed and is measured in rotations per second (s).
r is radius of the circulator and is measured in meters (m).
We need to find the rotational speed when radius is 1.7 m. Put r = 1.7 m in equation (1).

Hence, the rotational speed is 0.38 rotation per second.
Answer:
The answer to your question is Area = 50.27 m²
Step-by-step explanation:
Data
Area = ?
Diameter = 8 m
π = 3.1416
Formula
Area = πr²
Process
1.- Find the length of the radius
radius = diameter/2
- Substitution
radius = 8/2
- Result
radius = 4 m
2.- Find the area of the circle
Area = (3.1416) (4)²
Simplification and result
Area = (3.1416) (16)
Area = 50.27 m²
Answer:
1) supplementary
2) ∠ABD = 180° - 123°
Step-by-step explanation: