Acircle has a circumference whose length is 25 find the length of arc whose central angle 90

Question:

A circle has a circumference whose length is 25pi find the length of arc whose central angle 90°

The length of arc is 19.625 units

Solution:

Given that,

central angle = 90 degree

Circumference =

We know that,

Therefore,

The formula for arc length when angle is in degrees is:

Substituting the given values,

Thus length of arc is 19.625 units

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step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

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