If any line drawn from center of the circle (OC in the diagram) bisect the chord of circle (AB in the diagram), then it is said to be perpendicular to chord AB.
So OC is perpendicular to CB, and we can say that triangle OCB is the Right Triangle.
In the Right Triangle OCB,
angle BCO = 90°
angle COB = 90° - angle CBO = 90° - 40° = 50°
So, option A is the final answer, 90° and 50°.
Answer: E is located at (-2, 6)
Explanation:
The rule for reflecting over y = x is 
The x and y coordinates swap places.
Point E' is located at (6, -2) so that means point E must be located at (-2, 6)
Answer:
69π m^2
Step-by-step explanation:
surface area of cylinder= 2πrh+2πr^2
However, the cylinder is open top
Therefore, the outer surface area of the cylinder
=2π(6/2)(10)+π(3)^2 m^2
=60π+9π m^2
=69π
Answer:
33,000
Step-by-step explanation:
