itzandrea456
26.09.2019 •
Mathematics
In a circle , the length of an arc intercepted by a central angle is 12mm and the radius of the circle is 8mm. what is the measure, in radians , of the angle . a. 1.5 b. 95 c. 20 d 4.4
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Ответ:
circumference of a circle=2πr
data:
r=8 mm
circumference=2(8 mm)π=16π mm
2)we calculate the measure, in radians of the angle.
We know that:
circumference of a circle=2π radians
therefore:
16π mm=2π radians.
16 π mm2π radians
12 mm x
x=(12 mm * 2π radians) / 16π mm=1.5 radians.
A. 1.5
Ответ: