ashleyacosta ashleyacosta
  • 08-03-2019
  • Mathematics
contestada

if a sphere has a diameter of 12 units, what is the volume of half of the sphere?

Respuesta :

jimrgrant1 jimrgrant1
  • 08-03-2019

Answer:

see explanation

Step-by-step explanation:

The volume (V) of a sphere is

V = [tex]\frac{4}{3}[/tex]πr³ ( r is the radius )

here diameter = 12, hence radius = 6

The volume of half of the sphere is

V = [tex]\frac{1}{2}[/tex] × [tex]\frac{4}{3}[/tex]πr³

  = [tex]\frac{2}{3}[/tex]πr³

  = [tex]\frac{2}{3}[/tex]π × 6³

  = [tex]\frac{2}{3}[/tex]π × 216 ← cancel 3 and 216

  = 2π × 72

  = 144π units³ ← exact value

 ≈ 452.39 units³ ( to 2 dec. places )

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good job