What is the measure in radians for the central angle of a circle whose radius is 9 cm and intercepted arc length is 7.2 cm? Ente
r your answer as a decimal in the box.
2 answers:
Answer:
0.8
Step-by-step explanation:
Answer:
Length of an arc is given by:
......[1]
where,
r is the radius of the circle
is the angle in radian.
As per the statement:
A circle has a radius of 9 cm.
⇒r =9 cm
It is also given that: intercepted arc length is 7.2 cm
Substitute the given values in [1] we have;

Divide both sides by 9 we get;

Therefore, the measure in radians for the central angle is, 0.8
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