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8 October, 01:12

An arc 18.0 cm in length on the circumference of a circle subtends an angle of 130°. what is the radius of the circle?

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  1. 8 October, 01:29
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    Use the formula for the length of an arc:-

    L = r C where r = radius and C = angle subtended in radians So here we have:_

    18 = r * 130 * pi / 180

    18 = 2.269 r

    r = 7.93 cm to neraest hundredth
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