直徑14的黑糖發糕,面積大約是14×3.14?
客家美食大團圓 數學測驗

Quiz
•
Mathematics
•
8th Grade
•
Medium
莊云彤 莊云彤
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
○
×
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
「扇形的圓心角90°:整個圓的圓心角360°」和「扇形面積:圓面積」,這兩個比會相等嗎?
×
○
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
小發糕的半徑是3,大發糕的半徑是9,大發糕的面積大約是小發糕的幾倍?
2
3
6
9
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
小發糕的半徑是3,大發糕的半徑是6,大發糕的周長是小發糕的幾倍?
2
3
6
9
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
圓面積公式是什麼?
半徑 × 2 ×圓周率
直徑×圓周率
半徑 × 半徑 ×圓周率
直徑 × 直徑 ×圓周率
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
半徑6公分的圓面積比直徑7公分的圓面積大?
○
×
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列敘述何者正確?
甲圓的圓周率比乙圓小
乙圓的圓周率是甲圓的2倍
甲圓和乙圓的圓周率都是3.14
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