Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決: 國小數學題 @ 攻略匯集黑暗靈魂死戰修改器黑暗靈魂死戰攻略黑暗靈魂死戰黑暗靈魂攻略流程黑暗靈魂攻略索引黑暗靈魂死戰密技黑暗靈魂2下載, 黑暗靈魂2密技, 黑暗靈魂2 修改器,

Blogtrottr

Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決

國小數學題

Dec 8th 2014, 11:33

從左到右，中間三個長方形我們叫作A,B,C
而最上面的三角形我們叫作D

你畫的東西是一個三角柱的展開圖
所以A,B,C的頂邊長分別是D的5,12,斜邊長
而A,B,C的頂邊跟A,B,C的底邊一樣長
所以加起來也是30
那麼5+12+D的斜邊長也是30
D的斜邊長= 30-5-12

ANS：13公分

This entry passed through the Full-Text RSS service - if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers.

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions