Crossyword quizzle

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Across
  1. 3. square root of 100
  2. 7. Double of radius
  3. 10. A period of two weeks
  4. 11. 6 square
  5. 12. 10x5
Down
  1. 1. 300-42
  2. 2. The French word of one
  3. 4. 240 divided by 4
  4. 5. This is in the hundreds place of 44844
  5. 6. A hundred years
  6. 8. The math term refers to the most frequent number.
  7. 9. This math term represents approximately 3.14159