The circumference of a circle with radius5is31.42(*) Formulas: r = 5d = 10C = 31.4 C = 2·π·r C = π·d C = √4·π·A π = 3.1415 A = area of the circle C = circumference or perimeter r = radius,d = diameter
Radius (r): or Diameter (d): or Area (A): Unit of Lenght: Calculate Circumference Result: The circumference of a circle with radius 5 is 31.42(*) Formulas: r = 5 d = 10 C = 31.4 C = 2·π·r C = π·d C = √4·π·A π = 3.1415 A = area of the...
Problem 5 What is the circumference of a circle with a radius of 5"? Circumference Since they gave us the radius in this problem, use the radius version of the formula. $$ \eqalignno{ Circumference &= 2\pi\cdot radius \\ &=2\pi\cdot 5 \\ &=10\pi \\ &= 31.4} $$ Proble...
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from Chapter 14 / Lesson 5 255K Discover how to find the area and circumference of a circle. Learn the area of a circle formula, the circumference of a circle formula, how to calculate the circumference of a circle, and how to calculate the area of a circle. Related...
Find the circumference of the circle with a diameter of 8 inches. Solution: Step 1:Write down the formula:C=πd Step 2:Plug in the value:C= 8π Answer:The circumference of the circle is 8π≈ 25.163 inches. Example: Find the circumference of the circle with a radius of 5 inches. ...
A circle has a radius of 5 cm. What's the circumference of the circle? A. 10π cm B. 15π cm C. 20π cm D. 25π cm 相关知识点: 试题来源: 解析 C。本题考查圆的周长计算。圆的周长等于 2πr,半径为 5cm,所以周长是 2×π×5 = 10πcm。A 选项少乘了 2;B 选项计算错误;D ...
There is a circle. The radius is 5 cm. What is the circumference of the circle? A. 10π cm B. 15π cm C. 20π cm D. 25π cm 相关知识点: 试题来源: 解析 C。圆的周长公式为 2πr,半径是 5cm,周长就是 2π×5=10π cm,而四个选项中只有 C 的 20π cm 符合条件,A 选项结果...
The figure below shows a circle with radius R and centre O. The diameter is twice the radius of the circle. Solved Examples on Perimeter of Circle Example 1: What is the circumference of the circle with diameter 4 cm? Solution: Since the diameter is known to us, we can calculate the...