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An arc of length 10 meters is formed by a central angle A on a circle of radius 4. The measure of A in degrees (to two decimal places) is _____. A. 216.76 B. 143.24 C. 2.50 D. 36.76

Respuesta :

wolf1728
arc length   =   circumference • [central angle (degrees) ÷ 360]

central angle (degrees)  = 360 * arc length / circumference
circumference = PI * 2 * 4 = 25.1327412287

central angle (degrees)  = 360 * 10 / 25.1327412287
central angle (degrees)  = 143.2394487828

answer is B


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