计算该圆的周长 Π（pi）取3.14
圆的周长
Quiz
•
Mathematics
•
5th Grade
•
Hard
黄胜宇 黄胜宇
Used 2+ times
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15 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪个是圆周长的计算公式
C=πr
C=2πr
C=2πd
S=πd
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
计算图中阴影部分的周长
4π+4
8π+8
4π+8
8π+4
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
请计算图中图形的周长
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
请问如何用半径r表达圆的周长
C=2πr
C=πr
C=πr2
i don't know
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
圆的半径扩大到原来的2倍，它的周长就（ ）
扩大到原来的4倍
扩大到原来的8倍
扩大到原来的2倍
不变
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