What is the length of a chord that is 6 cm from the center of a circle with a ra

Practice Questions

Q1
What is the length of a chord that is 6 cm from the center of a circle with a radius of 10 cm? (2019)
  1. 8 cm
  2. 12 cm
  3. 10 cm
  4. 6 cm

Questions & Step-by-Step Solutions

What is the length of a chord that is 6 cm from the center of a circle with a radius of 10 cm? (2019)
  • Step 1: Identify the radius of the circle, which is given as 10 cm.
  • Step 2: Identify the distance from the center of the circle to the chord, which is given as 6 cm.
  • Step 3: Use the formula for the length of the chord: chord length = 2√(r² - d²).
  • Step 4: Substitute the values into the formula: chord length = 2√(10² - 6²).
  • Step 5: Calculate 10², which is 100.
  • Step 6: Calculate 6², which is 36.
  • Step 7: Subtract 36 from 100: 100 - 36 = 64.
  • Step 8: Take the square root of 64, which is 8.
  • Step 9: Multiply by 2: 2 * 8 = 16 cm.
  • Step 10: Conclude that the length of the chord is 16 cm.
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