Answer:
D. R0, 360°
Step-by-step explanation:
Since the transformation is from (x,y) to (x,y), the values stay the same...
It's just like a 360 degrees rotation then, since the end position is identical to the start position.
All other answers would affect at least one of the values to change sign like (-x,y), (x,-y) or (-x,-y)... but a 360 degrees rotation would not.
The answer would be 30.
60/2 = 30
90/2 = 45
120/2 = 60
Answer:
201.45 cm²
Step-by-step explanation:
The whole circle has an area of π(9)² cm², or 81π cm². The shaded part represents all of the circle except for the chunk swept out by sector XZ.
Sector XZ sweeps out 75°, which represents 75/360 of the whole circle, or, simplified, 15/72. That means the shaded area must represent the other 57/72. To find the area then, we can just multiply that fraction by 81π:

Using π ≈ 3.14 and crunching the numbers out gives us a result of approximately 201.45 cm².