circumference = 2*pi*11 = 69.115 inches to 3 dp
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eleven (11) inches
If the radius of a circle is 8.5 inches the circumference is: 53.4 inches
A circle with a radius of six inches has a circumference of 37.7 inches.
the radius is 10.5 inches. * * * * * Wrong! Circumference = 2*pi*Radius Or, Radius = Circumference/(2*pi) So circumference = 21 inches implies radius = 3.34 inches (to 3 sf)
The radius is 30 inches.