The radius of a circle from the area: if you know the area A, the radius is r = √(A / π). The radius of a circle from circumference: if you know the circumference c, the radius is r = c / (2 ×π). The radius of a circle from diameter: if you know the diameter d, ...
Example 2: Suppose that the diameter of the circle is 12 feet. Then, we can use the formula πd to calculate the circumference.Circumference $=$ πd $= 3.14159 \times 12 = 37.69$ feetConclusionNow you know how to calculate the circumference of a circle if you know its radius or ...
The radius of a circle always equals half of its diameter, so to find the diameter, multiply the radius by two. For example, if you know the radius of a circle is 4 centimeters, work out 4×2=8 The diameter of the circle is 8 centimeters. Find Diameter From Circumference 1. Note th...
The circumference of a circle with diameter4.52is14.2(*) Formulas: r = 2.26d = 4.52C = 14.2 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 ...
Circumference of a circle = 2*pi*radius or diameter*pi What is the circumfrence of a circle if the diameter is 4Cm? The formula for the circumference of a circle is C = πd, π = 3.142, d = 4cm C = 3.142 x 4cm C = 12.568cm What is the circumference of a circ...
In terms of diameter: Circumference = π·d = 3.14·94 = 295.16(*) In terms of area: Circumference C = √4·π·A = √4·π·6940 = 295.32(*) (*) 295.3 mm exactly or limited to de precision of this calculator (13 decimal places). Note: for simplicity, the operatio...
百度试题 结果1 题目4. What is the circumference of a circle with diameter 12 cm?37.2cm 相关知识点: 试题来源: 解析 37.2cm 反馈 收藏
If the circumference of a circle is 25 cm, what is its diameter? The circumference of the circle is 69.08 cm. What is the diameter? What is the circumference of a circle with a diameter of 30 centimeters? What is the circumference and the area of a circle that has a diameter ...
The circumference of the circle can also be calculated when we are given with its diameter. As we know, the diameter of a circle is the longest chord...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answe...
Questions this calculator can answer: How to find the perimeter of a circle with a radius of 12 feet? A circle has a diameter of 24 feet. What is its circumference? If a circle has a area of 452.4 square feet. What is its perimeter?