how to do circumference of class,5
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How to find the circumference of a circle:
The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.
If a circle has a diameter of 4, its circumference is 3.14*4=12.56.
If you know the radius, the diameter is twice as large.
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by their formula
like 1/2×b×h
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