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one inch is one inch; one inch dia refers to one inch diameter of a circle; it is still one inch
6/8 of an inch
It is because your 1 inch is one circle 1 inch one circle one of each get it.
Calculate the radius, which is simply 1/2 the diameter. Then use the standard formula for the area of a circle. ________________________________________________________________ The circle area = (pi) x diameter / 4 = 3.14 x 25/4 = 19.625 Sq inch
you have to quote the diameter or radius or circumference of the circle to calculate the area. If diameter 78.53. If radius 314.15. If circumference 7.95