Radius = 1/2 (diameter) = 25 inches.
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Circumference of any circle = 2*pi*radius or diameter*pi
diameter = 8 inches so the radius will = 4 inches area of a circle = pi*radius2 area = 50.26548246 or 50 square inches to the nearest square inch.
Are you referring to the circle's diameter or its cicumference? If you mean diameter then the radius is 50/2 = 25 feet If you mean circumference then the radius is 50/(2*pi) = 7.957747155 or about 8 feet
50 centimeters
The formula for the area of a circle is A = πr^2, where A is the area and r is the radius of the circle. To find the radius from the diameter, you divide the diameter by 2. So, for a circle with a diameter of 100, the radius would be 50. Plugging this into the formula, the area would be A = π(50)^2 = 2500π square units.