[速答题]同学们做课间操,五年级2班有24个同学要求排成长方形队伍,应该怎样排队?

红豆枝儿2022-10-04 11:39:543条回答

[速答题]同学们做课间操,五年级2班有24个同学要求排成长方形队伍,应该怎样排队?
列算式

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7.S侧=2πR*h
S底=πR^2
S侧:S底=2πR*h:πR^2=2πR*3/2R:πR^2=3:1
是六的倍数的卡片占2/3*3/4=1/2,
卡片总数=15÷1/2=30（张）

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