三角形面積

Quiz
•
Mathematics
•
10th Grade
•
Medium
Used 29+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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
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
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
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
圖中,PQRS是一個四邊形。PS⊥PQ,PQ = 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
圖中,AB = 14 cm,BC = 6 cm及AC = 18 cm。延長AB至D點,使AD⊥CD。求CD的長度。
5.02 cm
3.86 cm
1.75 cm
4.47 cm
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