Radius = 16.96/2*pi = 2.699 inches to 3 decimal places
Area = pi*2.6992 = 22.885 square inches to 3 decimal places
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2 inch radius = 12 9/16" circumference & an area of 12.56637 sq. inches.
What is 43 inches? The Area? The circumference? The Diameter? If the diameter is 43 inches than the radius is 21.5 inches If the Circumference is 43 inches than the radius is 6.96 inches If the Area is 43 inches than the radius is 3.7 inches Hope this is helpful :)
Circumference = 31.4 inches, approx. Area = 78.5 square inches, approx.
Area = pi*r2 = 50.265 sq inches Circumference = 2*pi*r = 25.133 inches.
Circumference is pi * r * 2. Area is pi * r2. In your circle, both r * 2 and r2 equal 4. Your radius is 2 inches.