The area of a circle with a radius of 5 cm is ___. A. 25π cm² B. 10π cm² C. 5π cm² D. 75π cm² 相关知识点: 试题来源: 解析 A。本题考查圆的面积计算公式,圆的面积 = π×半径²。半径为 5cm,所以面积为 25π cm²。选项 B 计算错误,应为 25π cm...
1【题目】5Given that the area of a circle with radius 10 cm is equal to the area of asector with centralangle 40°, then the radius of the sector iscm. 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 radiu...
Radius (r): or Diameter (d): or Area (A): Unit of Lenght: Calculate Circumference Result: The circumference of a circle with area 12π is 21.77(*) Formulas: r = 3.46 d = 6.93 C = 21.8 C = 2·π·r C = π·d C = √4·π·A π = 3.1415 A...
Radius: or Diameter or Circumference: Unit: Calculate Area Result: The area of a circle with radius 65 is 13270 Formulae: r = 65 d = 130 C = 408 A = πr2 = π(d2)2 A = C24π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter Solut...
七、英语数学(翻译)(10分)1.Find the area of a circle with a radius of 8 centimeters.2.A right triangle has one angle that measures90°.七、英语数学(翻译)(10 分) 1.Find the area of a circle with a radius of 8 centimeters. 2.A right triangle has one angle that measures 90°. ...
Find the area of a circle with a radius of 7 units.搜索 题目 Find the area of a circle with a radius of 7 units. 答案 解析 null 本题来源 题目:Find the area of a circle with a radius of 7 units. 来源: 越分练习题 收藏 反馈 分享...
百度试题 结果1 题目 What is the area of a circle whose radius is the diagonal of a square whose area is 4? A. 2π B. 2π C. 4π D. 8π E. 16π 相关知识点: 试题来源: 解析 D 反馈 收藏
A radius of a circle with area 36πcm2 is 6cm, The width of the rectangle is 6cm, A diameter of the circle is 12cm, so the length of the rectangle is 24cm, The perimeter of the rectangle is 2×(6+24)=60cm. 如果一个面积为36π 平方厘米的圆的半径等于一个矩形的宽度,并且这个圆的...
Calculate the area of the region inside the circle r = 4cos(theta) and outside the circle r = 2. Prove the formula A=(1/2)*r^2*theta for the area of a sector of a circle with radius r and central angle theta . (Hint: ...
where R is the radius of the circle The area of the circle area (A)=πR2 and, circumference of the circle (C)=2πR Answer and Explanation: Given that the radius of a circle is 12 cm. R=12 cm The diameter of a circle has the double length as comp...