首页
登录
职称英语
If the area of a circle is 81π, then the diameter of the circle isA、9B、18C、36
If the area of a circle is 81π, then the diameter of the circle isA、9B、18C、36
游客
2025-02-27
11
管理
问题
If the area of a circle is 81π, then the diameter of the circle is
选项
A、9
B、18
C、36
D、9π
E、18π
答案
B
解析
The formula for the area of a circle is πr2. Therefore, the radius of this circle is the square root of 81, or 9. The diameter is twice the radius, so 18.
转载请注明原文地址:http://tihaiku.com/zcyy/3974882.html
相关试题推荐
Iftheareaofacircleis81π,thenthediameterofthecircleisA、9B、18C、36
Inthefigure,Oisthecenterofthecircleandtheareaofthecircleis4π,w
Inthecoordinateplane,pointsAandBareendpointsofadiameterofacircle
[img]ct_gre5image002[/img]Thediameterofthecircleis10.ColumnA
[img]ct_gre5image016[/img]Thecirclesabove,withcentersOandP,eachhavera
Whatistheareaofacirclewithacircumferenceof14πinches?Theequationf
Whatistheareaofacirclewhoseradiusisthediagonalofasquarewhosearea
Whichofthefollowingpointsliesintheinteriorofthecirclewhoseradiusis
Tiffanyinflatesabeachball.Ifthediameteroftheballis0.6m,whatisits
Whatistheareaofacirclewithacircumferenceof14πinches?49πTheequation
随机试题
Smokingisconsidereddangeroustothehealth.Ourtobacco-seller,Mr.Johns
[originaltext] ProteststhatbeganlastmonthnearWallStreetinNewYorkhav
工程标底是体现( )水平的价格。A.社会平均 B.社会先进 C.社会合理
操作波的极性对变压器外绝缘来讲,正极性比负极性闪络电压低得多。
下列哪项不是建筑工程施工合同具认定无效的情形:()。A.承包人未取得建筑施工企
2005年以来我国康复事业进入全面发展阶段,在政策支持方面都有()等。A.《关于
染色体如下图所示,哪项符合编号部位1、2、3的相应名称() A.长臂端粒短臂
若AB的坐标方位角与其真方位角相同时,则A点位于()A.赤道上 B.中央子
下列属于绩效评价指标中的效益指标的是()。A.时效指标 B.经济效益指标
劳神过度主要伤及A.肝脾 B.肺脾 C.脾肾 D.心脾 E.心肾
最新回复
(
0
)