It depends on what the number is. If its 1 then add 1+1 and you get 2 so...
that means that if you divide 2 in half you get 1 which is the radius of a
circle that has an area of 2. If this doesn't help you ask your teacher or parent/guardian.
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pi radians = 180 degrees -144 degrees = (pi/180) x (-144) radians
Pi radians is equivalent to 180 degrees.
The same way as with degrees. All you have to know is how to convert degrees from radians and radians from degrees.... this is how you do it... radians= pi/180 degrees= 180/pi to get angles from degrees to radians you multiply the angle that is measured in degrees by pi/180. to get angles from radians to degrees you multiply the angle that is measured in radians by 180/pi. pi=3.14
pi [radians] = 180 [degrees] 1 [degree] = pi/180 [radians] = 0.0174533 [radians] therefore, 2115 [degrees] = 2115 [degrees] * 0.0174533 [radians/degree] = 36.9 [radians]
It means a central angle measured in radians. ex. Convert 360 degrees radians. 180 degrees = pi radians so 360 degrees = pi radians/180 degrees = 360pi radians/180 = 2 pi radians