find the value of π by activity method in lengthy.
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A piece of card
A compass and pencil
A protractor
A ruler
A pair of scissors
Glue and paper
circle 12 slices
Step 1
Draw a circle on your card. The exact size doesn't matter, but let's use a radius of 5 cm (centimetres).
Use your protractor to divide the circle up into twelve equal sectors.
What is the angle for each sector? That's easy – just divide 360° (one complete turn) by 12:
360° / 12 = 30°
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