Question

The circumference of a circle is 19π cm. Find its diameter, in centimeters.

Answer 1

d=19 cm

Solution:

• Circumference=
• C=πd
• π=3.14
• d= diameter
• We are given the circumference, in terms of pi:
• C=19π
• C=πd
• Therefore, the diameter is equivalent to 19.

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Answer 2

d = 19 cm

Explanation:

Circumference of circle = πd

πd = 19π

d = 19π ÷ π

d = 19 cm