It means that the statement is referring to a circle or a sphere whose diameter measures 12 inches.
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The area of a circle whose diameter is 12 inches is: 113.1 square inches.
Diameter of a circle is defined as twice the radius. So if diameter is 12, the radius is 6.
The area of a circle with diameter equals 12 inches to the nearest whole number is: 113 square inches.
if the diameter is in feet then multiply the diameter by pi 38 x 3.14159 = 119.38042 square feet if the diameter is in inches then dividethe inches by 12 then multiply the diameter by pi 38 ÷ 12 = 3.16666 x by 3.14159 = 9.94835 square feet
6 in....