If A is the Area, r is the radius and D is the Diameter then
D = 2A/r
The Converseof theis formula is:
A = D X r/2
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The general formula for the area of a circle is pi times the radius squared. The radius is half the diameter, so the area is pi times half the diameter times half the diameter again.
Area = Pi(d/2)2 where d = diameter
Use the formula area = pi x radius2. The radius is half the diameter.
The formula for the area of a circle is: area = pi x radius2. The radius is half the diameter.
The formula for the area of a circle is pi x radius2. The radius is half the diameter, and the diameter of an inscribed circle is the same as the length of a side of the square.The formula for the area of a circle is pi x radius2. The radius is half the diameter, and the diameter of an inscribed circle is the same as the length of a side of the square.The formula for the area of a circle is pi x radius2. The radius is half the diameter, and the diameter of an inscribed circle is the same as the length of a side of the square.The formula for the area of a circle is pi x radius2. The radius is half the diameter, and the diameter of an inscribed circle is the same as the length of a side of the square.