圓周和直徑
Quiz
•
Mathematics
•
6th Grade
•
Practice Problem
•
Hard
N-利國良主任 MATTHEW
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9 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圓形的半徑是22cm,圓周是多少?(取 )
69.08cm
138.16cm
69.14cm
138.29cm
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
圓形的圓周是4.71m,它的直徑是多少?
0.15m
15m
1.5cm
1.5m
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
一輛汽車的車輪半徑是75厘米。這輛汽車前進1000米,車輪轉動了多少周?
(答案取至小數點後一個位)
(取 π =3.14 )
424.6周
2.1周
212.3周
4.2周
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
一個圓桶在地上滾動25周,前進了78.5米。圓桶的半徑是多少厘米?
(取 π =3.14 )
100厘米
4.9厘米
50厘米
50米
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
志偉踏單車繞着圓形的小花園外圍走了一個圈,車輪剛好向前轉動了80周。車輪的半徑是45厘米,小花園外圍的直徑是多少米?
(取 π =3.14 )
28.7米
7200米
36米
72米
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
每個圓的圓周是多少?
(取 π =3.14 )
7.85cm
15.7cm
23.55cm
31.4cm
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
把七個大小相同的圓拼砌,並把外面六個圓的圓心連起成一個六邊形,如右圖所示。如果每個圓的圓周是31.4cm,六邊形的周界是多少?
(取 π =3.14 )
6cm
12cm
60cm
120cm
8.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
右圖是由一個大圓和三個相同大小的小圓組成,A、B和C分別是三個小圓的圓心。如果大圓的圓周是66cm,直線AC的長度是多少?
(取 π = )
7cm
14cm
22cm
44cm
9.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
曉晴在長方形畫了兩個圓,如圖中所示。
長方形的闊度是_________cm。
2.5
5
10
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