圆与扇形、毕氏定理

圆与扇形、毕氏定理

8th Grade

10 Qs

quiz-placeholder

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圆与扇形、毕氏定理

圆与扇形、毕氏定理

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 10 pts

有一直角三角形,直角边为8cm,斜边为17cm,求其面积。

15cm

60cm

68cm

72cm

2.

MULTIPLE CHOICE QUESTION

15 mins • 10 pts

有一直角三角形,直角边为5cm,斜边为13cm,求另一直角边的长度。

5cm

8cm

12cm

14cm

3.

MULTIPLE CHOICE QUESTION

15 mins • 10 pts

将一梯子斜靠在墙上,梯脚与墙壁的距离为0.6m,梯顶到地面的距离为0.8m,求梯子的长度。

0.1m

1m

10m

10cm

4.

MULTIPLE CHOICE QUESTION

15 mins • 10 pts

4cm

4.5cm

2√2 cm

4√2 cm

5.

MULTIPLE CHOICE QUESTION

15 mins • 10 pts

12cm

24cm

6.

MULTIPLE CHOICE QUESTION

15 mins • 10 pts

有一圆,直径为20cm,求其周长。(取π=3.14)

31.4cm

62.8cm

125.6cm

251.2cm

7.

MULTIPLE CHOICE QUESTION

15 mins • 10 pts

有一圆,半径为7cm,求其面积。(取π=22/7)

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