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Calculate the circumference of a circle with diameter 10cm. - OCR - GCSE Maths - Question 13 - 2018 - Paper 1

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Question 13

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Calculate the circumference of a circle with diameter 10cm.

Worked Solution & Example Answer:Calculate the circumference of a circle with diameter 10cm. - OCR - GCSE Maths - Question 13 - 2018 - Paper 1

Step 1

Use the formula for circumference

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Answer

The circumference of a circle can be calculated using the formula:

C = eta imes d

where:

  • CC is the circumference
  • eta (pi) is approximately 3.14
  • dd is the diameter of the circle.

Step 2

Calculate using the given diameter

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Answer

Given that the diameter d=10cmd = 10cm, substituting this value into the formula:

C=3.14×10=31.4cmC = 3.14 \times 10 = 31.4cm

Thus, the circumference of the circle is 31.4 cm.

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