
S2 Ch13
Authored by Chun Wai Wong
Mathematics
8th Grade
Used 3+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若某圓的圓周是 4cm,該圓的半徑是
2 cm
2π cm
2/π cm
4/π cm
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
圖中,AOB 是一個以 O 為圓心的扇形。 AO = 8cm 和 AO⊥OB 。求陰影區域的周界,準確至二位小數。
12.57 cm
18.27 cm
23.88 cm
28.57 cm
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
圖中的圖形是由兩個不同大小的半圓切去另一個半圓所組成。求圖形的面積,準確至二位小數。
6.28 m2
7.85 m2
9.42 m2
12.57 m2
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
圖中,POQ 是一個半徑為 5 cm 的扇形。若弧長 PQ 的長度為 14 cm,求扇形 POQ 的面積。
10 cm2
35 cm2
70 cm2
140 cm2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
考慮一個底直徑為 1 cm 和高為 6 cm 的圓柱。以 π 表示圓柱的總表面面積。
6π cm2
6.5π cm2
12π cm2
14π cm2
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
考慮兩個高度相同的圓柱 P 和 Q。若圓柱 P 的體積:圓柱 Q 的體積 = 1:4,求圓柱 P 的底半徑:圓柱 Q 的底半徑。
1:2
2:1
1:16
16:1
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
把 200 cm3 的水注入一個空的圓柱形容器後,容器裏的水位是 7 cm 。求容器被浸濕的表面面積,準確至最接近的 cm2 。
210 cm2
281 cm2
353 cm2
462 cm2
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