Contact us
Choose a category below so we can get back to you as quickly as possible.
做一個圖便可以很容易地計算面積. 設BM垂直AD與M,CN垂直AD與N 面積=三角形ABM面積+梯形BMNC面積+三角形CND面積 = 1/2×3×5 +(5+8)×(12-3)/2 + 1/2×(15-12)×8 = 15/2 + 117/2 + 12 = 78
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.