初二忠圆与扇形
Authored by You Chuah
Mathematics
9th Grade
CCSS covered
Used 56+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若一个扇形的圆心角是45°，面积为2л，则这个扇形的半径是_____。
2
4
6
8
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
已知一圆的面积为 36π ，求其半径。
18
6
64
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
穿过圆心且其两端点皆在圆周上的线段称为_____。
半径
平行线
直径
水平线
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圆的直径为半径的_____倍
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
一圆的半径为 7m，求此圆的面积。（π = ）
144
44
22
154
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
扇形的弧的长与其所对的_____成正比。
圆周率
半径
圆心角
直径
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一扇形的圆心角增大，则其弧长_____。
增长
减短
不变
不清楚
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