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Find a leg: round to the nearest tenth

Grade 8 math · Fieldbook Learning

Name ______________________ Date __________

Use a² + b² = c² and solve for the missing leg: subtract the known leg squared from the hypotenuse squared.

  1. A right triangle has a hypotenuse of 11 cm and one leg of 6 cm. How long is the other leg, in cm? Round to the nearest tenth.
  2. A right triangle has a hypotenuse of 19 m and one leg of 2 m. How long is the other leg, in m? Round to the nearest tenth.
  3. A right triangle has a hypotenuse of 9 km and one leg of 8 km. How long is the other leg, in km? Round to the nearest tenth.
  4. A right triangle has a hypotenuse of 10 km and one leg of 2 km. How long is the other leg, in km? Round to the nearest tenth.
  5. A right triangle has a hypotenuse of 23 km and one leg of 6 km. How long is the other leg, in km? Round to the nearest tenth.
  6. A right triangle has a hypotenuse of 9 cm and one leg of 4 cm. How long is the other leg, in cm? Round to the nearest tenth.
  7. A right triangle has a hypotenuse of 22 cm and one leg of 8 cm. How long is the other leg, in cm? Round to the nearest tenth.
  8. A right triangle has a hypotenuse of 18 km and one leg of 8 km. How long is the other leg, in km? Round to the nearest tenth.
  9. A right triangle has a hypotenuse of 7 cm and one leg of 5 cm. How long is the other leg, in cm? Round to the nearest tenth.
  10. A right triangle has a hypotenuse of 21 m and one leg of 17 m. How long is the other leg, in m? Round to the nearest tenth.
  11. A right triangle has a hypotenuse of 28 m and one leg of 26 m. How long is the other leg, in m? Round to the nearest tenth.
  12. A right triangle has a hypotenuse of 14 m and one leg of 5 m. How long is the other leg, in m? Round to the nearest tenth.
  13. A right triangle has a hypotenuse of 27 m and one leg of 14 m. How long is the other leg, in m? Round to the nearest tenth.
  14. A right triangle has a hypotenuse of 16 m and one leg of 11 m. How long is the other leg, in m? Round to the nearest tenth.
  15. A right triangle has a hypotenuse of 24 km and one leg of 2 km. How long is the other leg, in km? Round to the nearest tenth.
  16. A right triangle has a hypotenuse of 26 m and one leg of 15 m. How long is the other leg, in m? Round to the nearest tenth.
  17. A right triangle has a hypotenuse of 32 m and one leg of 7 m. How long is the other leg, in m? Round to the nearest tenth.
  18. A right triangle has a hypotenuse of 8 km and one leg of 2 km. How long is the other leg, in km? Round to the nearest tenth.
  19. A right triangle has a hypotenuse of 11 km and one leg of 4 km. How long is the other leg, in km? Round to the nearest tenth.
  20. A right triangle has a hypotenuse of 17 km and one leg of 2 km. How long is the other leg, in km? Round to the nearest tenth.
More free practice: fieldbooklearning.com/ca/practice/grade-8/find-a-leg-round-to-the-nearest-tenth/

Answer key: Find a leg: round to the nearest tenth

  1. 9.2
  2. 18.9
  3. 4.1
  4. 9.8
  5. 22.2
  6. 8.1
  7. 20.5
  8. 16.1
  9. 4.9
  10. 12.3
  11. 10.4
  12. 13.1
  13. 23.1
  14. 11.6
  15. 23.9
  16. 21.2
  17. 31.2
  18. 7.7
  19. 10.2
  20. 16.9