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中1数学 平面図形 円の面・周の長さ

Authored by Kodai Tsuruoka

Mathematics

7th Grade

Used 5+ times

中1数学 平面図形 円の面・周の長さ
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

以下の選択肢から半径rの円の面積Sを求める公式を選びなさい。

S=πrS=\pi r

S=πr2S=\pi r^2

S=2πrS=2\pi r

S=3.14r2S=3.14r^2

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

半径rの円の周ℓを求める公式を選びなさい。

l=πr2l=\pi r^2

l=2πrl=2\pi r

l=πrl=\pi r

l=πl=\pi

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

半径4㎝の円の面積を求めなさい。(単位不要)

16π16\pi

4π4\pi

8π8\pi

12π12\pi

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

半径4cmの円の周の長さを求めなさい。(単位不要)

16π16\pi

8π8\pi

4π4\pi

2π2\pi

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

直径16cmの円の面積を求めなさい。(単位不要)

16π16\pi

8π8\pi

64π64\pi

4π4\pi

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

直径16㎝の円の周の長さを求めなさい。(単位不要)

64π64\pi

16π16\pi

8π8\pi

4π4\pi

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

左のおうぎ形の中心角をいいなさい。

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