im assuming your circle has a diameter of 1/4 inches
to find sq in just find the area since the area is the definition of square inches.
area = (3.14159) * (.252) = 0.196349375sq in
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The area of a circle with an 8 inch diameter is approximately 50.27 square inches.
The area of a 3-inch diameter circle is about 7.068 square inches.
19.63 square inches are in the area of a 5-inch diameter circle.
Area of circle is pi*radius*radius. hence area of 1.5 inch circle is 7.065 square inches.
There are 100*pi square inches in a 20 inch diameter circle