the volume v=(4/3)(pie symbol 3.14..)r of a spherical balloon changes with the radius
a)at what rate does the volume change with respect to radius when r= 2ft?
b) by approximately how much does the volume increase when the radius changes from 2 to 2.2ft?
v=(4/3)(pie symbol 3.14..)r
sorry, couldn't find the pie symbol to multiply the r with in this equation
The Attempt at a Solutionfor part a i tried to plug in 2 or the r in the equation and then divide by 2
for part b i tried subtracting the equation when r is substituted for 2 from when the r is substituted for 2.2