Math, asked by urmibh28gmailcom, 1 year ago

the circumfrance of a circle exceeds the diameter by by 30 cm. find the radius of circle

Answers

Answered by sarthakchandurpdwzoj
5
circumference=2πr
diameter=2r
according to condition,
circumference-diameter=30
2πr-2r=30
2r(π-1)=30
r×15/7=15
r=7cm
Answered by k4kunal09pe7o1t
4
2πr=2r+30 cm
2×22/7×r -2r = 30 cm
44r/7- 2r= 30 cm
44r-14r =210 cm
30r=210 cm
r=7 cm. ans
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