Contact us
Choose a category below so we can get back to you as quickly as possible.
側面積=3.14*10*10=314平方釐米,底面積=3.14*(10/2)*(10/2)=78.5平方釐米,表面積=78.5*2+314=471平方釐米.
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.