百度试题 结果1 题目If the area of a circle is 39π in., what is the radius of the circle to the nearest tenth? A: 12.5 in. B: 12.4 in. C: 6.2 in. D: 39 in. 相关知识点: 试题来源: 解析 C 6.2in. 反馈 收藏
(half of circle = half of area) Quarter-Circle (1/4 of circle = 1/4 of area)Any Sector (fractional part of the area)where n is the number of degrees in the central angle of the sector.where C S is the arc length of the sector.Notice that when finding the area of a sector,...
The area of incircle of an equilateral triangle is 154\ c m^2 . The perimeter of the triangle is (a) 71.5 cm (b) 71.7 cm (c) 72.3 cm (d) 72.7 cm
题目: 定义一个Point类,派生出Rectangle类和Circle类,计算各派生类对象的面积Area()。 免费查看参考答案及解析 题目: Console和Area是一一对应的。 A、对 B、错 免费查看参考答案及解析 题目: 一个Area可有几个Console。 A、对 B、错 免费查看参考答案及解析 ...
A circle is a shape with all points equidistant from its center. The arc of a circle is a portion of the circumference, or the curved boundary of the circle. How is the length of an arc calculated? The length of an arc is calculated by multiplying the measure of the angle...
然后中间一个小圆与其他六个小圆相切，未涂色部分是除了小圆外的部分。如果是这样的话，大圆半径就是3cm（一条直线上的三个小圆圆心相连延长就是直径，∴大圆直径=3×小圆直径）。∴未涂色的面积=大圆面积-7个小圆面积=π×3²-7×π×1²=2π≈6.28（cm²）...
Circles are the two-dimensional shapes in which a central point contains a fixed distance from a round closed path and, this distance is uttered as the radius of the circle. The area of a circle is basically the space coverage by the circle on a plane. ...
RD SHARMA ENGLISH-APPLICATION OF INTEGRALS-All Questions Using integration, find the area of the triangle ABC, coordinates o... 12:36 Find the area of the region in the first quadrant enclosed by the y-ax... 06:29 Find the area of the circle x^(2)+y^(2)=16 exterior to the parabo...
In the math class, we need to calculate the area of a circle. The formula for the area of a circle is A = ___. A. 切制至切制至πr²切制至切制至 B. 包音始手调专几个派论矿包音始手调专几个派论矿2πr包音始手调专几个派论矿包音始手调专几个派论矿 C. 这始决万统技...
Problem Solving 试题详情 题目: In the figure below,Ois the center of the circle. What is the area of the circle? 选项: A、A 2π B、B 3π C、C 5.5π D、D 7π E、E 9π 答案: E