Which is the closest to the volume of the sphere shown below, in cubic feet?
2.5 ft.-
A 20.83 ft?
B 49.09 ft?
C 19.63 ft
D65.45 ft

HURR PLEASE HELP!

addition

step-by-step explanation:

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is

$649.60

step-by-step explanation:

2 1/2 feet

step-by-step explanation: