A dilation by a scale factor of 6 will cause the radius to increase by a factor of 6. So

. If we plug this value of r into the formula for the circumference of a circle we get

So basically N = 12r. You haven't given me any original radius, so I can't give you a constant for N, but if you do have that original radius you can just plug that into 12r.
Based on your comment, N = 12 * 9 = 108 inches
I believe this would be 28 feet. You find this by dividing 7/8 to get the decimal of the fraction. (Which is 0.875) Then multiply by 32 ft to get the answer. Hope this helps!
Answer:
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