Thank you for the opportunity to help you with your question!
pi*r^2*h+2/3 pi r^3 = 486 pi
h = (486-2/3 r^3 )/r^2 = 486/r^2 -2/3 r
S = 2pi*r*h +3*pi*r^2 = 2*pi*r*(486/r^2-2/3r)+3 pi*r^2 = pi(772/r - 4/3 + 3r^2)
ds/dr = pi (-972/r^2 +6r) =0
r = (972/6)^(1/3 ) = 5.45 ft
h = 486/5.45^2-2/3*5.45 = 12.73 ft
hi these answers are wrong
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?