Area of a circle is equal to the product of pi and r-squared. Area of circle is region enclosed by it. Visit BYJU'S to learn the area of circle formula, definition, derivation, along with solved examples.
解析 C。选项 A 是数学符号表达,不是英语表达。选项 B“pie”拼写错误,应该是“pi”,且“square”缺少动词形式。选项 C 表达正确,“times”表示“乘以”,“squared”是“平方”的正确表达。选项 D“the square of pi r”表达不准确,应该是圆半径的平方乘以圆周率。
When we calculate the area of a circle, the formula we use is ___. A. πr² B. 2πr C.
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;...
113 The area of a circle isof the area of a semicircle.The circumference of the circle is18.84 centimetres.How many centimetres is the perimeter of the semicircle?⑩ The area of a circle is ÷of the area of a semicircle.The circumference of the circle is 18.84 centimetres. How many centi...
Cloudburst Makes Mess Of D.C. Area; Underground Blasts Dim Dupont CircleMartin WeilClarence Williams
-you should prompt the user for an integer value corresponding to the radius of a circle. Do this with code similar to: radius = int(input("circle radius? ")) compute the circumference of the circle using the formula c = 2 πr where r is the radius and c is the ci...
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...
The formula for calculating the area of a circle is ___. A. A = πr² B. V = πr²h C.
A. 6 cm B. 12 cm C. 18 cm D. 3 cm 相关知识点: 试题来源: 解析 B。解析:圆的面积公式为πr²,已知面积为 36π,可得πr² = 36π,解得 r = 6cm,直径为 2r = 12cm。A 选项 6cm 是半径不是直径;C 选项 18cm 不符合计算结果;D 选项 3cm 是半径的一半不是直径。反馈...