posted by dan .
The larger circle has a radius that is 18 inches longer than the smaller circle. The larger circle has a circumference that is A pi feet larger then the smaller circle. find the value of a.
Radius of smaller circle: a-18 (inchs)
Radius of larger circle: a (inchs)
Circumference of smaller circle:
Circumference of larger circle:
Difference betwen ircumference of smaller and large circle:
A*pi=3*pi Divide with pi