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°.
Let x be the unknown number.
4+x=2x
4=2x-x
x=4
The first thing to do in this case is to find the volume of the sphere.
We have then:
V = (4/3) * (pi) * (r ^ 3)
V = (4/3) * (pi) * ((4) ^ 3)
v = 268 in ^ 3
Then, the but of the sphere will be given by:
W = (0.075) * (268)
W = 20
Answer:
the weight of the sphere, to the nearest pound is:
A) 20
10. 60 Miles per hour
11. 20 pounds per square in or in^2
12. $60 per jacket
13. 15 meters per minute
14. 5 kilometers per hour
15. 2 yards per second
B is the answer if it is x + 9=20
