In Mrs. Harrison's kindergarten class, children make handprints in a round clay mould for their parents. The mould has a radius of 4 centimetres. What is the mould's diameter?

These are the formulars to work out the answers.

C = 2πr C=πd

A = πr2

So to work this out: The radius is half of the diameter so, times the radius by 2 and you have the answer so 4 x 2 = 8 so 8 is the answer

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