Q: Application of relation between arc of length and central angle?

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arc length/2pi*r=measure of central angle/360

You can think of an arc as a fraction of the circumferance of a circle. Also, a complete circle is 2pi radians, so any central angle is THETA / 2pi of a complete circle. Multiply by the circumferance to get the length of the arc: THETA / 2pi * 2(pi)(r) = THETA * r or the length of the arc is simply the radius times the central angle in radians

The focal length of a concave mirror is about equal to half of its radius of curvature.

The Center of curvature is 2 times the focal length. By the way this is a physics question.

This is a Zoom lens with a focal length of between 75 and 300 mm.

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arc length/2pi*r=measure of central angle/360

It can't be done. You must also know at least any one of the following: Perimeter Relation between length and breath Relation between Area and length Relation between Area and breath Relation between perimeter and Area Breath and so on...........

There is no direct relation between the area of a sector and the length of an arc. You must know the radius (or diameter) or the angle of the sector at the centre.

f=|-R/2|

You can think of an arc as a fraction of the circumferance of a circle. Also, a complete circle is 2pi radians, so any central angle is THETA / 2pi of a complete circle. Multiply by the circumferance to get the length of the arc: THETA / 2pi * 2(pi)(r) = THETA * r or the length of the arc is simply the radius times the central angle in radians

The focal length of a concave mirror is about equal to half of its radius of curvature.

There is no relationship between units of mass and either length of capacity. Units of capacity are the cubed units of length.

The best graph or chart that would be used for showing the relation between bird wing length and average flight distance is the line graph. This type of graph will best show the relation between the two.

no relationship

The Center of curvature is 2 times the focal length. By the way this is a physics question.

The effective length of a magnet is the distance between the magnetic poles. It is always less than the geometric length of the magnet,though the actual relation between the two depends on the shape of the magnet.

Weihht is named after the prodical Alfred J. Weihht who discovered the relation between objects and mass. Length is the measure across an object.