Question

A circle has a circumference of
82 inches. Find its diameter.
d = [ ? ]π inches

Answer 1

• d = 82/π or d = 26.10 inches

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Use circumference formula:

• C = πd

Substitute 82 for C and find d:

• 82 = πd
• d = 82/π in

or

• d = 26.10 in