There is a hemisphere of radius of 2 cm how much liter will be occupied in the hemisphere… given 1 liter= 1000 cubic cm…

• volume of hemisphere=2*3.14*r^2/3
  so volume=16.736 cubiccm
  volume=16.736/1000=.0167liter
• 9 years agoHelpfull: Yes(6) No(1)
• it's a trick question.....
• 13 years agoHelpfull: Yes(0) No(3)
• V=2/3r^3
  2/3*8=5.3
  
• 9 years agoHelpfull: Yes(0) No(2)
• Given that diameter of golf ball = 4.1 cm
  
  Radius of golf ball = d / 2 = 4.1 / 2 = 2.05 cm
  
  Surface area of golf ball without dimples = 4πr2 = 4π(2.05)2 = 16.81π cm2
  
  Given that the shape of dimples is hemispherical and radius of each dimple = 2 mm = 0.2 cm
  
  ∴ area of each dimple =2πr2 = 2π(0.2)2 = 0.08π cm2
  
  So, area of 150 dimples = 150 × area of each dimple = 150 × 0.08π = 12πcm2
  
  Area of flat surface removed to make 1 dimple = πr2 = π(0.2)2 = 0.04π cm2
  
  ∴ area of flat surface removed to make 150 dimples = 150 x 0.04π = 6π cm2 .
  
  Total surface area of golf ball exposed to surroundings = surface area of golf ball without dimples + area of 150 dimples - area of flat surface removed to make 150 dimples
  
  Total surface area = 16.81π + 12π - 6π = 22.81π cm2
  
  Total surface area = 2.81x3.14
  
  ∴Total surface area = 71.62 cm2.
• 6 years agoHelpfull: Yes(0) No(1)