The circumference of a circle exceeds the diameter by 18 cm. Find the radius of the circle.
Answers
Answered by
12
The circumference of a circle exceeds the diameter by 18 cm.
2πr-d = 18
2πr-2r = 18
2r(π-1) = 18
r(22/7 - 1) = 9
r(15/7) = 9
r = 9×7/15 = 4.2cm
2πr-d = 18
2πr-2r = 18
2r(π-1) = 18
r(22/7 - 1) = 9
r(15/7) = 9
r = 9×7/15 = 4.2cm
Similar questions