已知正十边形内切圆的半径是4，那么这个正十边形的面积是( ) A．80sin36 发布时间：2017-04-30 07:09 │ 来源：www.tikuol.com 题型：选择题 问题： 已知正十边形内切圆的半径是4，那么这个正十边形的面积是( )A．80sin36° B．160tan18° C．80cos36° D．160cot18°
题型：选择题 选词填空，完成下列的短文。helps by an walk with well1. Li Xiaobin is ____________ accountant. He works in a bank. He ____________ the bank use its money ____________. He likes working ____________ numbers. He goes to work ____________ bus, but he likes to ____________ home.helps helping bike ways 2. Policewoman Fangang likes ____________ people. She likes English. She often ____________ tourists find their ____________. She goes to work by ____________. 查看答案