I can't make out what the radius of the sphere is, but the equation you're looking for is:

For example:
If the radius of a sphere is 5 m, it's volume would be,




Answer:
I came to the answer of 6.
Answer:
JK and LM are equal because it tells us they are equal.
JL and LN are equal because L is the midpoint of JN.
Since they are both equal, sides LK and NM must be equal.
Step-by-step explanation:
Hope this helps!
1.) Let the distance of the person from the boat be x, then
sin 65 = 15/h
h = 15 / sin 65 = 16.55 ft
2.) No triangle shown
3.) Let the angle of elevation of the sun be x, then
tan x = 35 / 50 = 0.7
x = arctan (0.7) = 34.99