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三角形面積

Mathematics

10th Grade

Used 29+ times

三角形面積
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7 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

圖中,AB = 11 cm,BC = 8 cm及 B = 65°。求 △ABC的面積。

39.9 cm2

44 cm2

79.8 cm2

18.6 cm2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

在 △ABC中,AB = 13 cm及

AC = 9 cm。若 △ABC的面積是 48 cm2,求A的所有可能值,準確至一位小數。

55.1°

55.1°或124.9°

11.8°或168.2°

24.2°或155.8°

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

圖中,PQ = 9 cm,QR = 5 cm及 PR = 8 cm。求 △PQR的面積。

4.11 cm2

396 cm2

261 cm2

19.9 cm2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

求圖中 ∆ ABC 的面積。

23.1 cm2

15.6 cm2

11.6 cm2

16.9 cm2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

圖中,ABCD是一個平行四邊形。 BC = 7 cm,CD = 4 cm及

C = 50°。求ABCD的面積。

5.36 cm2

10.7 cm2

21.4 cm2

42.9 cm2

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

圖中,PQRS是一個四邊形。PSPQPQ = 15 m,QR = 11 m, RS = 10 m及PS = 8 m。求PQRS的面積。

60 cm2

112 cm2

115 cm2

533.5 cm2

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

圖中,AB = 14 cm,BC = 6 cm及AC = 18 cm。延長ABD點,使ADCD。求CD的長度。

5.02 cm

3.86 cm

1.75 cm

4.47 cm

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