Radius (r): or Diameter (d): or Area (A): Unit of Lenght: Calculate Circumference Result: The circumference of a circle with area 11π is 20.84(*) Formulas: r = 3.32 d = 6.63 C = 20.8 C = 2·π·r C = π·d C = √4·π·A π = 3.1415 A = are...
The area of a circle with radius 4 cm is ___. A. 8π cm² B. 12π cm² C. 16π cm² D. 20π cm² 相关知识点: 试题来源: 解析 C。圆的面积等于πr²,半径为 4 厘米,面积是π×4²=16π 平方厘米。A 选项半径为 2 倍根号 2 厘米的圆面积约为 8π 平方厘米;...
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...
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 Solution Steps: Area of a circle in terms of radius: Area = π·r2 =...
The fixed point inside the periphery is known as the center while the constant distance of this point from the circumference is termed the radius of the circle. Let us suppose r be the radius of a circular geometry then its area is given by the below formula: ...
It's an angle with the vertex in the center, whose arms extend to the circumference. Semicircle area calculator. How to use the area of a circle calculator? Diameter to area and radius to area. You can easily calculate everything, the area of a circle, its diameter, and its radius, us...
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...
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...
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A = Circle area π = Pi = 3.14159… Area of Circle Enter the area contained within a circle. Radius of Circle This is the radius of a circle that corresponds to the specified area. The radius is the distance between the centre and any point on the outer edge of a circle. ...