If the diameter of a circle is 5 centimeters, how long is the arc subtended by an angle measuring 60° ?

2 answers:

7 0

Arc length s is given by s = r*theta, where theta is the central angle in radians (not degrees).

Here the diam. is 5 cm, so the radius is 5/2 cm. 60 deg = sqrt(3) / 2. Thus,

the arc length is s = (5/2 cm)*sqrt(3) / 2. This simplifies to (5/4) sqrt(3).

Darina [25.2K]3 years ago

5 0

I think the answer will be 12 because 12 times 5 is 60°

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