Fill in the blanks to make the statements true.

Circumference ‘C’ of a circle is equal to 2 ×_________.

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Value of π is _________ approximately.

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Circumference ‘C’ of a circle can be found by multiplying diameter ‘d’ with ________.

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1 m² = _________ cm².

Fill in the blanks to make the statements true.

1 cm² = _________ mm².