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...
A circle's circumference (in cm) is 804 times its area (in m²). Find the circle's radius (in cm). If a circle has a circumference of 3.253 cm, find: a) the diameter of the circle b) the area of the circle Rou...
The circle has a ___ of 5 cm. A. diameter B. radius C. circumference D. area 相关知识点: 试题来源: 解析 B。本题考查圆的相关英语表述。选项 A“diameter”是直径;选项 C“circumference”是周长;选项 D“area”是面积。“radius”是半径的意思,这个圆的半径是 5 厘米。反馈...
To find the area of the sector of a circle with a radius of 5 cm and an arc length of 3.5 cm, we can follow these steps: Step 1: Use the formula for arc lengthThe formula for the arc length (L) of a circle is given by:L=θ360×2πrwhere:- L is the arc length,- θ is...
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 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;...
<p>To find the area of the sector of a circle with a radius of 4 cm and an angle of 60 degrees, we can follow these steps:</p><p><strong>Step 1: Understand the formula for the area of a sector</strong> The area \( A \) of a sector of a circle can be calc
Radius (r): or Diameter (d): or Area (A): Unit of Lenght: Calculate Circumference Result: The circumference of a circle with area 5π is 14.05(*) Formulas: r = 2.24 d = 4.47 C = 14.1 C = 2·π·r C = π·d C = √4·π·A π = 3.1415 A = area...
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...
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: ...