上圖中,O和P分別是小圓和大圓的圓心。小圓的直徑和大圓的半徑都是8厘米。AB的長度是多少厘米?
圓的認識

Quiz
•
Mathematics
•
6th Grade
•
Hard

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
10
20
30
40
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
上圖中,FG是大圓的直徑,O和P分別是兩個較少的圓的圓心。OP的長度是5厘米,大圓的半徑是多少厘米?
2.5
5
7.5
9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
圓的所有直徑都必須穿過哪一點?
圓周
圓心
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
上圖中,A、B和C分別是三個圓的圓心。以A為圓心的圓,半徑是1.5厘米。若以B為圓心的圓,半徑是2厘米。若以C為圓心,半徑是2厘米。圖中三角形的周界是多少?
3
3.5
4
4.5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
上圖中,D、E和F分別是三個圓的圓心。若以D、E和F為圓心的圓,它們的半徑是1.6厘米。三角形DEF是哪種三角形呢?
等腰
等邊
直角
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