关闭

澳际学费在线支付平台

2017年4月27日SAT官方每日一题---数学选择.

刚刚更新 编辑: 浏览次数:250 移动端

  为了让我们更好的适应sat考试,sat官网每天都会有sat官方每日一题,下面是小编为您整理的2016年4月sat官方每日一题,是数学选择,让我们一起来看一看这道数学选择吧。

  Read the following SAT test question and then click on a button to select your answer.

  The shape of a solid wire can be approximated by a cylinder, where the circular cross section of the wire represents the base of the cylinder and the length of the wire represents the height of the cylinder. If a wire has a circular base with a diameter of 0.01 meters and a length of 31.42 meters, what is the total volume of the wire, to the hearest hundredth of a cubic centimeter?

  A. 0.01

  B. 785.5

  C. 2468

  D. 9871

  答案:C

  解析:

  Choice C is correct. The equation for the volume of a cylinder is V= πr^2h, where V is the volume, r is the base radius, and h is the height. In this problem, the height is the length of the wire.

  The radius of the wire is half the diameter, so r=0.01/2=0.005 meters. This must be converted to centimeters, by mulyiplying 0.005 by 100 to get 0.5 centimeters. The length of the wire, h, is 31.42 meters. This must be converted to centimeters by multiplying 31.42 by 100 to get 3142 centimeters. To find the volume, substitute these values in and simplify V= π(0.25)(3142)=2468. The correct answer is 2468 cubic centimeters.

  上面是小编为您整理的2016年4月sat官方每日一题,是数学选择题,为了让我们更好的适应sat考试,sat官网每天都会发布sat官方每日一题,让我们一起来看一看这道数学选择吧。

  澳际留学为远程及海外留学申请提供服务,远程及海外申请对留学咨询公司的要求更为严苛,海外家长和学生往往更加明确自己的需求,了解海外名校招生标准和要求,远距离沟通对互相的了解、信任程度,以及双方时间协调提出更高要求。澳际的知识体系与丰富的申请经验,远超当地留学行业整体水平,海外学子和非本地学生越来越多的选择了我们,海外学生很难获得专业和贴心的留学咨询服务,而澳际用实际行动赢得了学生和家长的信任。今年澳际的海外录取依然非常优秀。这批学生在语言和学校背景上拥有更强的竞争优势,也对留学机构的服务提出了更高的标准和要求。如果您对我们的服务感兴趣,欢迎在线咨询,或拨打电话预约,直接莅临现场咨询。

  • 澳际QQ群:610247479
  • 澳际QQ群:445186879
  • 澳际QQ群:414525537