A cylinder of diameter 14 and height 21 is converted into a cone of radius 10. Now, what could be the percentage height of the new shape ?

• πr2h=πr2h/3
  7*7*21=10*10*h/3
  h= 30.87
  %Height= (30.87*100)/21= 147%
• 4 years agoHelpfull: Yes(2) No(0)
• volume of cylinder is pir*radius*radius*height
  so, it will give the 1029pie cubic unit.
  then, volume of cone is 1/3 pie*r*r*h.
  so height=(3*1029 *pie)/pie*10*10
  answer is 30.87 unit
  Ans=30.87 unit
• 5 years agoHelpfull: Yes(1) No(2)
• Let no, of spheres be N
  by given,volume of the cylinder=NxVolume of spere
  radius of cylindr=14cm
  height of cylinder=21cm
  volume=πr²h  =22/7 x 21 x 14 x 14
                         =12936 cm³
  radius of sphere=3.5cm
  volume=4/3πr³  =4/3 x 22/7 x 3.5 x 3.5 x 3.5
                            =179.66cm³
  N=12936/179.66
     =72 ans.
• 5 years agoHelpfull: Yes(0) No(2)