Contact us
Choose a category below so we can get back to you as quickly as possible.
半徑:4π÷π÷2,=4÷2,=2(釐米),3.14×22,=3.14×4,=12.56(平方釐米);答:它的面積是12.56平方釐米;故答案為:12.56.
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.