Waves radiate out in all directions
Answer:

Explanation:
The distance between two distinct points on the same plane (
) can be calculated by the General Equation of the Line Segment, a derivation from the Pythagorean Theorem:
(1)
Where:
- Initial point.
- Final point.
If we know that
and
, then the distance of the line segment is:



Answer:
It's either A or C, I think it's A
Explanation:
Earth's geosphere contains 99.94% of its mass. Hope this helps!