Respuesta :
The required proportion to be used to find the radius of the circle is 1.25/2π = 32/2πr. Option d is correct.
The length of an arc intercepted by a central angle of circle is 1.25 radians is 32 inches, the proportion could be used to find the radius of the circle to be determined.
What is proportionality?
proportionality is defined as between two or more sets of values, and how these values are related to each other in the sense are they directly proportional or inversely proportional to each other.
For a circle, the angle is given by,
Angle = Arc / radius
1.25 radians = 32 / r
(1 radian = 2π / 360)
1.25* 2π/360 = 32/r
1.25/360 = 32/2πr or 1.25/2π = 32/2πr.
Thus, the required proportion to be used to find the radius of the circle is 1.25/2π = 32/2πr.
Learn more about proportionality here: https://brainly.com/question/22620356
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