第五单元测试卷3(含答案)
第五单元测试卷(一)一、填空题。1.一个圆有( )条直径,所有的直径都( ),直径的长度是半径的( )倍。2.一个圆的半径是1分米,直径是( )分米,周长是( )分米,面积是()平方分米。3.圆有( )条对称轴,长方形有( )条对称轴。4.要画一个周长是12.56厘米的圆,圆规两脚间的距离应定为( )厘米,这个圆的面积是( )平方厘米。5.用一张长10分米、宽8分米的纸剪一个最大的圆,这个圆的面积是( )平方分米。6.一个时钟的时针长5厘米,它转动一周形成的图形是( ),这个时针的尖端转动一昼夜所走的路程是( )厘米。7.( )个圆心角是90°的相同大小的扇形可以组成...
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