if the circumference of a circle exceeds it's diameter by 30 cm find radius of circle
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Answered by
3
By question,
2πr = 2r + 30
2r(π - 1) = 30
r(π - 1) = 15
r(22/7 - 1) = 15
r(15/7) = 15
r = 15*7/15
r = 7cm
2πr = 2r + 30
2r(π - 1) = 30
r(π - 1) = 15
r(22/7 - 1) = 15
r(15/7) = 15
r = 15*7/15
r = 7cm
Aashu01:
u have done the wrng in 2nd step..
hey, pls check again
thank you for pointing that out!
u wlcm..
Answered by
4
According to question..
2pie r = 2r +30
44r =14r +210
30r=210
r=210/30=7 cm
2pie r = 2r +30
44r =14r +210
30r=210
r=210/30=7 cm
14 cm is diameter or radius
diameter
thanks a lot
u wlcm
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