How to Calculate the Diameter of a Circle. Calculating a circle's diameter is easy if you know any of the other dimensions of the circle: the radius, the circumference, or the area. It's also possible if you don't know any of the above. How to find (diameter) of a Circle Construction Technology & civil Work. Loading. Finding the Diameter of a Circle (Grade 9 Academic Lesson 9.2 2 27 13) - Duration: 7:58. The diameter of a circle is any line that passes through the center of a circle and has its endpoints on the circle. If you know a circle's radius or circumference, it's easy to find its diameter. We give a quick introduction to the circle. First we define the important parts of a circle: the radius, diameter and circumference. We then give the formulas for computing the circumference and. How to find diameter of a circle if you know the circumference; How to calculate pipe diameter; Instruction. 1. The diameter can be found by the formula: D = 2R, where the diameter is twice the radius of the circle. The radius is the distance from the center to any point on the circle. The diameter is a line that connects two points a curved shape and passes through its center. In many applied problems it is required to find the diameter of a circle or sphere. The diameter of a circle to find its radius, length and area of a circle.The diameter of the ball find the radius, volume and surface area. The above example will clearly illustrates how to calculate the Area, Diameter and Circumference of a Circle, Area of Sector manually. Related Calculator: Circle Calculator. This tutorial will help you dynamically to find the Math area problems. Calculators and Converters ↳ Tutorials ↳ Area; Ask a Question. In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere. In more modern usage, the length of a diameter is also called the diameter. How to Calculate the Circumference of a Circle. Whether you're doing craft work, putting fencing around your hot tub, or just solving a math problem for school, knowing how to find the circumference of a circle will come in handy in a. Would you rather be able to detect any lie you hear or get away with any lie you told? How sick is too sick to go to work or school? How did the Australia fires start?