contestada

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?

Respuesta :

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