The approximation for the diameter of the moon accurate to the nearest hundred miles is s =  +- 2100 miles
<h3>Further explanation
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Arc Measure definition is,  in a circle, arc degree measure is equal to the measure of the central angle that intercepts the arc. Whereas the arc Length definition is, In a circle, the length of an arc is a portion of the circumference. Where the letter "s" is used to represent arc length.       
 (Radian Measure and Arc of a Circle).
 (Radian Measure and Arc of a Circle). 
There is a formula which relates the arc length of a circle of radius, r, to the central angle, θ in radians.
The radian measure θ of a central angle is defined as the ratio of the length of the arc  the angle subtends s, divided by the radius of the circle r.
where s = the arc length 
 = angle  in radians
 = angle  in radians

 or
 or
 
 
So the approximation for the diameter of the moon accurate to the nearest hundred miles is s =  +- 2100 miles
<h3>Learn more</h3>
- Learn more about the radian measure of the angle brainly.com/question/4675968
<h3>Answer details</h3>
Grade:  9
Subject:  physics
Chapter:  the radian measure of the angle
Keywords:  moon