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What is the radius of a circle if its circumference is 62.8 cm? (2022)

Practice Questions

Q1
What is the radius of a circle if its circumference is 62.8 cm? (2022)
  1. 10 cm
  2. 15 cm
  3. 20 cm
  4. 5 cm

Questions & Step-by-Step Solutions

What is the radius of a circle if its circumference is 62.8 cm? (2022)
  • Step 1: Understand the formula for the circumference of a circle, which is Circumference = 2πr, where r is the radius.
  • Step 2: We know the circumference is 62.8 cm, so we can write the equation: 62.8 = 2πr.
  • Step 3: To find the radius (r), we need to isolate r in the equation. First, divide both sides by 2π.
  • Step 4: Calculate 2π. Using π ≈ 3.14, we find 2π ≈ 6.28.
  • Step 5: Now, divide 62.8 by 6.28 to find r: r = 62.8 / 6.28.
  • Step 6: Perform the division: r = 10 cm.
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