Formula for area of a circle is A = pr2
r = 1/2d = 12.5cm, p = 3.142
A = 3.142 x (12.5cm)2
A = 490.9375cm2
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The area of the circle is 490.87 cm2
it's 25 sq in
The diameter of a circle is twice the length of its radius. Therefore, if the radius is 25 cm, the diameter would be 2 x 25 cm = 50 cm. The diameter is a straight line passing through the center of the circle and connecting two points on the circle's circumference.
Area of a circle = (pi) x (radius)2 Radius = 1/2 the diameter = 5 inches Area = (pi) x (5)2 = 25 pi = 78.54 square inches (rounded)
78.54 yards