4If the central angle of a sector is increased to twice the original angle and the radius is increased to3 times the original radius, then the area of the sector is increased to ( ) the original area.(A)4 times(B)18 times(C)12 times(D)6 times 相关知识点: 试题来源: 解析 B ...
结果1 题目【题目】Find the area of a sector where the central angle is 1100 and the diameter is 12 inches. Round to the nearest tenth152.0m^2 26.2in234.6m^2180.9in 相关知识点: 试题来源: 解析 【解析】CNeC=B/(360)πr^2 反馈 收藏 ...
(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(...
1The central angle is 45∘, and the radius is 8. Round your answers to the nearest hundredth and use 3.14 for π.The area of the sector is .The arc length of the sector is .The perimeter of the sector is .→45% 2The central angle is 45∘, and the radius is 8. Round your...
As shown in the figure below, the sector has a central angle of 45∘ and the radius of 8. Fill in the blanks. (Round your answers to the nearest hundredth and use 3.14 for π.) The area of the sector is . The arc length of the sector is . The perimeter of the sector is . ...
3As shown in the figure below, the sector has a central angle of 45∘ and the radius of 8. Fill in the blanks. (Round your answers to the nearest hundredth and use 3.14 for π.)The area of the sector is .The arc length of the sector is .The perimeter of the sector is .反馈...
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
结果1 题目 If the area of a sector with central angle 18°is 36 dm2, and a circle is drawn with the radiusof the sector as the radius, then the area of the circle isdm^2 . 相关知识点: 试题来源: 解析 720 反馈 收藏
一条弧AB和经过这条弧的端点的两条半径OA,OB所组成的图形叫( sector);顶点在圆心的角叫做圆心角 (central angle).例 将一个圆分割成三个扇形,它们的圆心角的度数比为1:2:3,这三个扇形的圆心角的度数解:因为一个周角为360^{\circ},所以分成的三个扇形的圆心角分别是:...
返回 12345678910111213141516 What is the measure of the central angle for the sector representing the percentage of students who take the bus? A.40° B.72° C.108° D.144° E.172° 我的答案: