1. 12 cm squared
  2. 18 centimeters squared
  3. 651 units squared
  4. (C) 70 square units
  5. (C) They are the same
  6. (D) 21.22
  7. (E) It cannot be determined from the information given.
  8. (A) \(30cm^2\)
  9. (A) 187 cm squared
  10. (D) 27 centimeters squared
  11. 12 units squared