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19-02-2017
Mathematics

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A teacher needs 256 lengths of string cut to 40 cm each.if balls of string are 30 cm long how many balls will be needed

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brownj523 brownj523

19-02-2017

256 * 40 = 10,240 cm needed

so if the balls are 30 cm each then

10, 240 divided by 30 = 341.3

so the teacher will need 342 balls.

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