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圓形面積與周長

Authored by Chih Kuo

Mathematics

6th Grade

Used 1+ times

圓形面積與周長
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

以下哪一個圓形的面積最大?

A. 半徑是10 m的半圓

B. 半徑是10 m的圓

C. 直徑是10 m的半圓

D. 直徑是10 m的圓

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

大圓和小圓的半徑分別是6 cm和2 cm,大圓的面積是小圓的多少倍?

A. 3倍

B. 6倍

C. 9倍

D. 12倍

3.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

圓周的長度是直徑的 (a)   倍多些。(以整數作答)

4.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

圓形地毯的周界是25.12 m,它的直徑是 (a)  

5.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

用邊長20 cm的正方形紙剪出最大的圓,該圓的圓周是 (a)  

6.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

晴時用一條長80 cm的鐵線製作半徑3 cm的鐵圈,最多可製成 (a)   個鐵圈。(以整數作答)

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

以下哪一項是正確的?

A. 圓周:直徑 = π

B. 圓周與半徑無關

C. 圓周:半徑 = π

D. 圓周:半徑 = 2π

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