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Paladinen [302]
3 years ago
12

Work out the volume of this hemisphere give your answer to 1 decimal place

Mathematics
1 answer:
Serggg [28]3 years ago
3 0

Answer:

volume of hemisphere=2/3×pi×r³

volume of hemisphere=2/3×22/7×8³

volume of hemisphere = 1072.76cm³

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Let A = {x : 2x² + 3x - 2 = 0} and B = {x : x² + 3x - 4 = 0 } find (A U B) × (A Π B)​
ivann1987 [24]

Given :

  • A = {x: 2x² + 3x - 2 = 0 }
  • B = {x : x² + 3x - 4 = 0 }

To find :

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Solution :-

<u>The </u><u>first </u><u>set </u><u>is </u><u>,</u>

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<u>Solving</u><u> </u><u>the </u><u>Quadratic</u><u> equation</u><u> </u><u>,</u>

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<u>Hence</u><u> </u><u>,</u>

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<u>The </u><u>second</u><u> </u><u>set </u><u>is </u><u>,</u>

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<u>Solving</u><u> the</u><u> Quadratic</u><u> equation</u><u> </u><u>,</u>

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  • x = 1 , -4

<u>Hence</u><u> </u><u>,</u>

  • B ={1,4}

<u>Now </u><u>,</u>

  • A U B = { 0.5 , 1 , 4 , -2}
  • A Π B = {∅ }

Since AΠ B is a null set , hence ,

  • A × B = {∅}
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