推 treehold:圓椎在圓體裡面，底部與圓重疊所以h等於r 04/04 23:14
推 treehold:一次的利率就是1% 不要想這麼複雜 04/04 23:22
→ kicksmile:我比較好奇是inscribed就是指椎頂碰到圓體頂的意思嗎 04/05 07:18
→ kicksmile:哦原來inscribed是得every vertex lies on the object 05/06 13:54
20. A right circular cone is inscribed in a hemisphere so
that the base of the cone coincides with the base of the hemisphere.
What is the ratio of the height of the cone to the radius of the hemisphere
不懂的是
1.從哪裡得知cone 頂端跟hemishpere的頂端是一樣的? cone h = hemishpere r?
2.right cirucular cone, right angle 還有其他形狀會用right來形容嗎
21. John deposited $10,000 to open a new savings
account that earned 4 percent annual interest,
compounded quarterly. If there were no other
transactions in the account, what was the amount of
money in John's account 6 months after the account
was opened?
一般複利年利率是4%,分四次發，一次的利率應該不會是1%而是
本金*(1+r)^n = 本金* 1.04
(1+r)^4 = 1.04
r= 0.00986
10000*(1.00986)^2= 10198.172
可是解答沒這個選項
麻煩請懂的人幫我解釋一下 謝謝阿
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