or origin, of the circle to its circumference and encompasses the area of any given angle that also originates from the center of the circle. A sector is best thought of as a piece of pie, and the bigger the angle of the sector, the bigger slice of pie. Each side of the segment...
1【题目】某扇形的半径是3,周界为18,求扇形的面积T he radius of a sector is 3 and its perimeter is 18.Find the are a of this sector. 2【题目】某扇形的半径是4,周界为23,求扇形的面积T he radius of a sector is 4 and its perimeter is 23.Find the are a of this sector.反馈 收藏 ...
2 Given that the radius of a sector is5 cm and its central angle is36°,then the area of thesector is ()(A)3.14cm2(B)3.925cm2(C)7.85cm2(D)15.7cm22 Given that the radius of a sector is 5 cm and its central angle is 36°,then the area of the sector is( ). (A)3.14 cm ...
百度试题 结果1 题目If the radius of a sector is R and its central angle is n", then the length of the arc expressed in terms of R and n is 相关知识点: 试题来源: 解析 π/(180)⋅ nR 180 反馈 收藏
【题目】【题目】 A student claims that when you double the ra dius of a sector whil ekeeping the measure of the central angle constant ,you double the area of the sector .Do you agree or disagree? Expla 答案 【解析】 【解析】 【解析】 【解析】相关推荐 1【题目】【题目】 A student ...
The radius and the area of a sector are 12 cm and 30π cm2 respectively. 某扇形的半径及面积分别为12 cm及30π cm2. (1) Find the angle of the sector. 求该扇形的角. (2) Express the perimeter of the sector in terms of π. 以π表该扇形的周界. 相关知识点: 试题来源: 解析 (1...
Percentages are a function of mathematics that enables you to compare two or more unequal things by expressing both as portions of 100. You can also express the number as a fraction or a decimal. For example, 10 percent is 10 out of 100, or 1/10 or .10. Calculate percentages by dividi...
【题目】T he radius and the are a of a sector are 12 cm and30n cm2 respectively.某扇形的半径及面积分别为12cm及 30πcm^2 .(1) Find the angle of the sector.求该扇形的角(2) Erpress the perimeter of the sector in terms of六以表该扇形的周界. ...
题目【题目】A sector of radius 10 cm is bent to form a conical cup as shown.sectorjoinwhen edges AB and CBbecomesarejoined withtape10cmSuppose the resulting cone has base radius r cm and height h cm.If h isthe heightof the cone show th h=√(100-(g/(36))^2). 相关知识点: ...
25 Given that the area of a circle with radius 10 cm is equal to the area of a sector with centralangle 40°, then the radius of the sector iscm. 38. Given that the radius of a sector is r, with a central angle of n, the area of thissector is 反馈...