The angle of a sector is decreased by 60% but its radius is increased by k%. If the arc length of the sector remains unchanged find the value of k( ). 某扇形的角减少60% ,而它的半径却增加k% .若该扇形的弧长维持不变,求k的值( ). A. 40 B. 60 C. 67 D. 150 相关知识点: ...
7 The are a of a sector of a circle is 36.288cm2. The angle of the sector is 0 radians and the radius of the circle is rcm.(a) Find an expression for 0 in terms of r.田The perimeter of the sector is 24.48cm.(b) Showthatθ=(24.48)/r-2田(c) Find the possible values of...
(A)unchanged(B)is increased by 3 times(C)decreased toof its original area(D)is increased to 3 times its original area4 If the central angle of a sector is decreased to of its original angle and the radius is increased to 3 times its original radius, then the area of the sector is(...
23 A sector of a circle has an angle of 60°. The are a of the sector is 50 m2.Calculate, to 3 significant figures,(a)the radius, in m, of the sector,m(3)(b) the perimeter, in m, of the sector.---m(3) 相关知识点: 试题来源:...
The present invention provides a stator angular sector for a turbine engine compressor (18), an outer shroud (24) and the inner shroud (22) extending radially between the shroud (22, 24) to each other, providing stator angular sector and at least one wing which is connected in the radial...
angle- the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. Want to thank TFD for its existence?Tell a friend about us,...
In the Sector angle edit field, type 90.选择语言:从 到 翻译结果1翻译结果2 翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 在本部门的角度编辑字段中,键入90 。 翻译结果2复制译文编辑译文朗读译文返回顶部 在领域角编辑领域, 90 类。 翻译结果3复制译文编辑译文朗读译文返回顶部 ...
解析 Radius=6cm Denote the radius of a sector as rcm Derive r=6 from r2×3.146=18.84. The radius is 6cm.结果一 题目 Given that the area of a sector is 18.84cm2 and the central angle is 60∘, find the radius and circumference of the sector. (π=3.14) 答案 Radius=6cm, ...
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The final angle in each triangle can be calculated using the triangle sum theorem: {eq}180 - 2a {/eq} and {eq}180 - 2b {/eq}. Central Angle Formula Lesson Summary Register to view this lesson Are you a student or a teacher? I am a student I am a teacher ...