I assume you mean "circumference".
The circumference of a circle with a radius of 9.7 inches is 60.95 inches.
Circumference = 2 * pi * radius
-or-
2 * 3.14 * 9.7 = 60.95
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Approximatly 50inches
62.8 inches. the formula for a circle's area is a = pi x r squared. substitute 3.14 for pi and 314 for a. 314 = 3.14 x r squared (divide both sides by 3.14) v 100 = r squared (find the square root of both sides) v r = positive or negative 10 . since it stands for the radius of a circle, it has to be positive. now that you know the circle's radius, you can solve the circumference formula, c = 2 x pi x r. c = 2 x 3.14 x 10 c = 62.8
The area is 314 cm2
Using 3.14 as Pi the area of circle is: 314.0
10 feet.