if the circumference of circle exceeds it's diameter by 16.8cm. find diameter of circle
Answers
Answered by
2
Circumference of circle = Diameter + 16.8
Circumference of circle = 2πr
∴ 2πr = 2r +16.8 [ ∵Diameter = 2r ]
⇒2r(π -1) = 16.8
⇒2r(15/7) =16.8
⇒r = (16.8 ×7)/30
⇒r = 1.12
∴circumference, 2πr = 2×(22/7)×1.12
= 7.04 cm
Circumference of circle = 2πr
∴ 2πr = 2r +16.8 [ ∵Diameter = 2r ]
⇒2r(π -1) = 16.8
⇒2r(15/7) =16.8
⇒r = (16.8 ×7)/30
⇒r = 1.12
∴circumference, 2πr = 2×(22/7)×1.12
= 7.04 cm
Similar questions