The circumference of a circle exceeds the diameter by16.8cm .Find the circumference of the circle ?

The circumference of a circle exceeds the diameter by16.8cm .Find the

1.	The circumference of a circle exceeds the diameter by16.8cm .Find the circumference of the circle ?
Answer» We know that circumference of a circle = 2π r.We know that diameter = 2r.Given circumference of a circle exceeds diameter by 16.8cm.2πr - 2r = 16.82r(π - 1) = 16.82r(22/7 - 1) = 16.82r(22 - 7/7) = 16.82r(15/7) = 16.830r = 16.8 * 730r = 117.6r = 117.6/30r = 3.92 cm.Therefore the radius of the circle = 3.92cm.