Answer:
for the first one 5.75
for the second one 143
for the third one 53
for the foruth one 92
Step-by-step explanation:
Answer: 3817.1 or 1215pi
Step-by-step explanation:
Volume = πr2h
= π×92×15
=1215π
= 3817.0350741116
Exercise 3
3z-1/10^5
3z-1/100000
Step-by-step explanation:
For the charges that have same sign of charges will repel each other while for the charges that have different charges will attract each other. So, we can say that like charges repel and unlike charges attract each other.
The Coulomb's law of attraction of repulsion states that force between charges is directly proportion to the product of charges and inversely proportional to the square of distance between them. Mathematically, it is given by :

Hence, all the given statements are true.
Answer:
Lines. A ray is a line that originates from a point till infinity.
Step-by-step explanation:
A ray is a form of a line, but it has a starting point. It starts from a point, and extends till infinity in a given or required direction.
This property distinguish completely a ray from a line or segment. Lines extends to infinity in both its directions. And a segment is the length of a line between its starting point and end point.
Thus, we can say that rays are special forms or types of lines.