UNIT 3

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Across
  1. 4. In ... geometry, the equation to the sphere takes the forms x 2 +y 2 +z 2 =a 2, and r=a, the first applying to rectangular Cartesian co-ordinates, the second to polar, the origin being in both cases at the centre of the sphere.
  2. 5. 5
  3. 7. 6
  4. 8. Infant deaths were especially ... among the very poor.
  5. 9. It isn't like they couldn't survive without her ... to their family income.
  6. 10. 3
Down
  1. 1. 2
  2. 2. 1
  3. 3. 4
  4. 6. 7