# How do you find the root radius?

## How do you find the root radius?

To find the radius, divide the area by pi, then take the square root.

### How do I find the radius of an angle?

So, to find the radius r, first convert the angle a to radians, then divide that into the length l of the arc. 6. Arc length equals radius times the angle in radians.

Root radius: the radius of a specified rounded from profile of the root surface that is tangent to the thread flank and root cylinder or cone.

How do you find the radius of a circle from an equation?

The center-radius form of the circle equation is in the format (x – h)2 + (y – k)2 = r2, with the center being at the point (h, k) and the radius being “r”. This form of the equation is helpful, since you can easily find the center and the radius.

## What is Crest and root?

The crest of a thread is the prominent part of a thread, whether internal or external. The root is the bottom of the groove between the two flanking surfaces of the thread whether internal or external. The flanks of a thread are the straight sides that connect the crest and the root.

J screw threads feature a root radius which improves the tensile stress area of the fastener and helps to reduce the stress concentration factor in the thread thus making the thread stronger. The radius is specified in the applicable standard. Internal threads are also of Unified form per ASME B. 1.

How do you find the radius of a circle with coordinates?

The formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle.

How do you find the radius of an arc length and angle?

Central angle and the chord length:

1. Divide the central angle in radians by 2 and further, perform the sine function on it.
2. Divide the given chord length by twice the result of step 1. This calculation gives you the radius as result.
3. Multiply the radius by the central angle to get the arc length.

Tag: root radius The root of a tap is the surface at the bottom of the thread-form that connects adjacent thread flanks and is expressed as width or as a diameter. The term root diameter is also called minor diameter, it’s one of those things, you say rain and I say precipitation, meaning the same thing.

### What is a UNJ thread?

The UNJ thread standard (ASME B1. 15) defines a system of threads for highly stressed applications requiring high fatigue strength. It was derived from a military specification (MIL-S-8879). MIL-S-8879 was primarily thought of and used for aerospace fastener and threaded component applications.

Click the “Radius” button, enter arc length = 4.9 then click the “DEGREES” button. Enter central angle =123 then click “CALCULATE” and your answer is Radius = 2.2825. 3) An angle has an arc length of 2 and a radius of 2.

How to find radius from area and diameter?

Given the area, A A, of a circle, its radius is the square root of the area divided by pi: r = √A π r = A π The formula for radius to area is: A = πr2 A = π r 2 How To Find Radius From Diameter

## How do you calculate the radius of a circle in Excel?

Click the “Radius” button, input arc length 5.9 and central angle 1.67. Click “CALCULATE” and your answer is radius = 3.5329. Let’s try inputting degrees again. 2b) A circle’s arc length is 4.9 with a central angle of 123 degrees.

### What is the radius of the arc length?

Radius = 3.6 central angle 63.8 degrees. Arc Length equals? Click the “Arc Length” button, input radius 3.6 then click the “DEGREES” button. Enter central angle =63.8 then click “CALCULATE” and your answer is Arc Length = 4.0087.