Use the formula for the area of a circle: A = pi x r2, where "r" is the radius.
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The area of a circle whose radius is 19 centimeters is: 1,134 cm2
A circle with a radius of 19 cm has an area of 1,134.11 square cm.
A circle with a radius of 19 cm has an area of 1,134.11 square cm.
168.56 square inches
38: the diameter of a circle is twice its radius.