Contact us
Choose a category below so we can get back to you as quickly as possible.
在周長48釐米的正方形內畫一個最大的圓,這個正方形的邊長為12釐米,則這個最大的圓的直徑為12釐米,所以這個圓的周長是3.14*12=37.68釐米
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.