Contact us
Choose a category below so we can get back to you as quickly as possible.
(1)梯形的高54×2÷(10+8)=6(釐米),也即大圓的半徑為6釐米;(2)陰影的面積:14×3.14×62-3.14×(6÷2)2÷2,=28.26-14.13,=14.13(平方釐米);答:陰影部分的面積14.13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.