數學 - 圓的面積 (6下C)
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42 questions
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1.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
一個圓的半徑是 5 厘米，求它的面積 (取 π＝3.14)
(a)
2.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
一個圓的直徑是 14 厘米，求它的面積 (取 π＝22/7)
(a)
3.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
一個半圓的半徑是 6 厘米，求它的面積 (取 π＝3.14)
(a)
4.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
一個圓的半徑是 10 厘米，求它的面積 (取 π＝3.14)
(a)
5.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
一個圓的直徑是 30 厘米，求它的面積 (取 π＝3.14)
(a)
6.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
一個四分之三圓的半徑是 14 厘米，求它的面積 (取 π＝22/7)
(a)
7.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
圓形時鐘的鐘面半徑是 16 厘米，求它的面積 (取 π＝3.14)
(a)
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