![]() How do I use degrees in my trigonometric function?Trigonometric functions use radians by default. if you know the volume you can derive the. ![]() If you need this, please leave some feedback! How do I enter a log base 10?Type "log(x,10)" where x is your value. Calculate the volume, surface area, circumference, diameter and radius of a sphere from any starting point e.g. Why doesn't my decimal "," work?Use a period decimal "." instead of a comma "," How do I enter a percent uncertainty, like "5±5%"?This isn't supported. FAQ How do I type "±"?Type "+-" and it will be converted. We only need to ensure the uncertainty is low enough for our use-case. For example, where exactly along the object is the length? What if the object has layers of dust or oxidation? Fortunately, we don't need to eliminate uncertainty. When measuring with high enough precision, defining what exactly to measure becomes problematic. For example, temperature and humidity will alter the length of wood and steel. This online calculator will calculate the 3 unknown values of a sphere given any 1 known variable including radius r, surface area A, volume V and circumference C. Even with a theoretically perfect tool, we will see variation in our measurements because the objects themselves vary. The most common source of uncertainty is our measurement tools. Uncertainty in our measurements with real numbers is inevitable. Rectangular prism l × w × h, where l is the length, w is the width and h is the height. Cylinder r2h, where r is the radius and h is the height. Cube s2, where s is the length of the side. This is common practice and often works well. Formulas for volume: Cone (13)r2h, where r is the radius and h is the height. If a given number is not a perfect square, you will get a final answer in exact form and decimal form. If a given number is a perfect square, you will get a final answer in exact form. This calculator treats all measurements as normal distributions that are independent from each other. The square root calculator finds the square root of the given radical expression. To learn more about why uncertainty exists and how to propagate it through equations, check out the guide! This calculator derives and evaluates this expression for you. Propagates uncertainty as the standard error, δ f ( x, y.Idea of the calculation of the area of a circle and the circumference.Īnother tightly linked idea is angles, and its equivalence between different systems. For a circle of radius r, the circumference and area are given by C 2pir (1) A pir2. pi is intimately related to the properties of circles and spheres. Among others, these include series, products, geometric constructions, limits, special values, and pi iterations. The concept of radius is intimately linked to the There are many formulas of pi of many types. More circle related calculatorsĬircles are among the most interesting objects in Math. Second, assume you know the area: The formula that links area A and radius r is First, assume you know the circumference: The formula that links circumference C and radius r is So then, all we need to do is to solve for the radius r, depending on what formula we are dealing with. There is a formula for theĪrea of the circle, and there is a formula for the circumference given the radius. The radius of a circle has a very specific relationship with the circumference and with the area. On the "Calculate" button, and all the steps will be shown to you.īy default, the drop-down menu provided will be set on 'Circumference', but you can change it if what you are providing is an area. Any valid expression will do, provided it is non-negativeĪfter you have provided a valid expression and have indicated whether it is a circumference or an area, all you need to do is to click You need to provide a valid numeric expression, like 3 or 2π. The calculator will show all the steps of the process. So you need to input the value, and use the drop down menu to indicate whether it is a perimeter This calculator will allow you to find the radius of a circle, provided that you indicate a valid circumference
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