1.a straight line extending from the center of a circle or sphere to the circumference or surface:The radius of a circle is half the diameter. 2.the length of such a line. 3.any radial or radiating part. 4.a circular area having an extent determined by the length of the radius from...
c : a bounded or circumscribed area 4 : a radial part 5 : the distance from a center line or point to an axis of rotation Examples of radius in a Sentence Measure the radius of the circle. a radius of 10 inches The new museum is expected to draw people from a wide radius. ...
The meaning of RADIUS is a line segment extending from the center of a circle or sphere to the circumference or bounding surface. How to use radius in a sentence.
The radius of a circle is 4. What is the area of the circle? A. 8π B. 12π C. 16π D. 20π 相关知识点: 试题来源: 解析 C。圆的面积是π乘以半径的平方,半径为 4 时,面积是 16π。选项 A、B、D 的数值都不符合该圆的面积计算结果。
题目The radius of a circle is 5 cm. What is the area of the circle? A. 78.5 cm² B. 31.4 cm² C. 15.7 cm² D. 19.625 cm² 相关知识点: 试题来源: 解析 A。本题考查圆的面积计算,圆的面积公式为πr²,半径 r = 5cm,面积 = 3.14×5×5 = 78.5cm²。B 选项 31.4 是圆...
The radius of a circle is 5 cm. What is the area of the circle? A. 25π cm² B. 10π cm² C. 15π cm² D. 7.5π cm² 相关知识点: 试题来源: 解析 A。圆形面积公式为π×半径²,半径为 5cm,面积为 25π cm²。
Radius of a circle is the distance between center of circle and the point on circle. Radius is half of diameter, the longest chord of circle. Circumference is the distance around the circle. Radius formula and equation at BYJU’S.
百度试题 结果1 题目The radius of a circle is half of its ___. A. diameter B. circumference C. area D. perimeter 相关知识点: 试题来源: 解析 A。本题考查圆的半径和直径的关系。半径是直径的一半。反馈 收藏
The area of a circle is 3.14 square decimeters. What is the radius of the circle? A. 1 decimeter B. 1 meter C. 1 kilometer D. 1 millimeter 相关知识点: 试题来源: 解析 A。圆的面积公式为πr²,已知面积为 3.14 平方分米,π取 3.14 时,半径 r 的平方为 1,所以半径为 1 分米。选项 ...
The area of a circle is 28.26 square meters. What is the radius of the circle? A. 3 meters B. 6 meters C. 9 meters D. 1.5 meters 相关知识点: 试题来源: 解析 A。圆的面积公式是:面积 = π×半径×半径,π取 3.14。28.26÷3.14 = 9,9 = 3×3,所以半径是 3 米。