Contact us
Choose a category below so we can get back to you as quickly as possible.
以長和寬分別作為底面有兩種情况:(1)以20作為底面圓則底面積為100/3.14.則V=1200/3.14(2)以12作為底面圓則底面圓面積為36/3.14.V=36*20/3.14
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.