Question 1201179


*[illustration rocket.png].
Volume of cone +volume of cylinder = Total volume
2/3 pi r^3 + 40pir^2= 700 pi/3 
2/3 r^3+40r^2 = 700/3
2r^3+120r^2 = 700
r^3+60r^2-700=0
Use calculator to solve
r=2.369