How to find the perimeter of a circle with a radius of 26.5 mm? A circle has a diameter of 53 mm. What is its circumference? If a circle has a area of 2206 square millimeters. What is its perimeter? Disclaimer While every effort is made to ensure the accuracy of the i...
The diameter of a circle is the distance across a circle directly through its center. The radius is one half of the diameter in measurement. The radius measures the distance from the very center of the circle to any point on the circle. You can calculate either of the measurements if you ...
or, when you know the Diameter:A = (π/4) × D2 or, when you know the Circumference:A = C2 / 4πExample: What is the area of a circle with radius of 3 m ? Radius = r = 3 Area= π r2 = π× 32 = 3.14159... × (3 × 3) = 28.27 m2 (to 2 decimal places)How...
A small circle with the radius of I cm moves around a large circle with the diameter of 6 cm.How long does the small circle go?How many rounds does the small cicle move? 相关知识点: 试题来源: 解析 小圆绕大圆运动一周的距离等于大圆的周长=6π=18.84 cm 小圆绕大圆运动一周转过的圈数...
What is the circumference and the area of a circle with a radius of 2 m? What is the ratio of the circumference of a circle to its diameter? If the circumference of a circle is 26 \pi cm, then what is the radius of the circle?
(Take π as 3.14) A. 9.42 cm B. 18.84 cm C. 28.26 cm D. 37.68 cm 相关知识点: 试题来源: 解析 B。圆的周长等于直径乘以 π,直径为 6cm,周长约为 6×3.14 = 18.84cm,故选 B。A 选项 9.42cm 过小。C 选项 28.26cm 过大。D 选项 37.68cm 过大。反馈 收藏 ...
Practice worksheet on the radius, diameter, circumference, and area of a circle Formulas: 1) Circumference C = or C= 2) Diameter, d = 2r and radius , 3) Area of a circle , A = π r2 ---...
结果1 题目 106. In the circle shown with center O and radius 2,AP has length 3 and is tangent to the circle at P. If CP is the diameter of the circle, what is the length of BC? D BO P A.1.5 D. 3.2 B. 2.4 E.5 C.3 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
答案 设长方形的对角线与其中一边的夹角是a则有 面积S=6*sina*6*cosa=36sina*cosa=18sin(2a)(0相关推荐 1rectangle is inscribed in a circle with diameter 6m.The formula for the area of the rectangle i 反馈 收藏
Circumference length formula in terms of diameter C = π·d Circumference length formula in terms of area C = √4·π·A Questions this calculator can answer: How to find the perimeter of a circle with a radius of 7 units? A circle has a diameter of 14 units. What ...