Q48 of 131 Page 226

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

Circumference = 2πr

Since, diameter (d) = 2r

So,

C = π×d

Hence, π is the answer

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If area of a triangular piece of cardboard is 90 cm², then the length of altitude corresponding to 20 cm long base is _________cm.

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Value of π is _________ approximately.

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

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1 m² = _________ cm².

Fill in the blanks to make the statements true.Circumference ‘C’ of a circle can be found by multiplying diameter ‘d’ with ________.