如圖是一個正方體置放在一個灰色平面上,則下列敘述何者錯誤?

角柱與圓柱小測驗

Quiz
•
Mathematics
•
Professional Development
•
Hard
陳沛儒 陳沛儒
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
圖(一)的直角柱由 2 個正三角形底面和 3 個矩形側面組成,其中正三角形面積為 a,矩形面積為 b。若將 4 個圖(一)的直角柱緊密堆疊成圖(二)的直角柱,則圖(二)中直角柱的表面積為何?【108.會考】
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
一圓柱體底圓半徑為 5cm,高為 10cm,則其表面積為多少 cm2?
Answer explanation
5×5×π×2+2×5×π×10=50π+100π=150π(cm2)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
甲、乙兩圓柱體的底面半徑分別為 12 公分、3 公分,在柱高相同的情形下,甲柱體的體積是乙柱體體積的多少倍?
4
8
16
36
Answer explanation
(12*12)/(3*3)=16
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如圖,此圓柱體的體積是多少立方單位?
Answer explanation
底面圓半徑=12π÷2π=6
體積=62π×8=288π(立方單位)
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
有一個體積為 512 立方公分的正方體,求此正方體的表面積為多少平方公分?〔93.基測Ⅰ〕
144
192
256
384
Answer explanation
設邊長為x公分,則
512=x3,x=8
正方體表面積=6×82=384(平方公分)
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列各圖皆由相同大小的正方形所構成,請問下列哪一個選項是正方體的展開圖?〔90.基測Ⅱ〕
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