How much is the football in Xiamen senior high school entrance examination?

The football in the local senior high school entrance examination is the no.5 ball.

The football specifications used in Xiamen senior high school entrance examination are recognized by FIFA, and the specific standard number is FIFA642 1 (that is, the diameter is about 20.8 cm or 7 inches). When testing in key places, use the same size of the No.5 ball, and the designated football size of different materials does not affect its size.

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