The area of a circle if its circumference 12pi is: 113.1 units squared.
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The circumference of a circle is given by Circumference = pi x diameter. The area of a circle is given by Area = pi/4 x diameter2. Thus for a circle with circumference c = 12 in. The area will equal a = 11.459 in2.
If the diameter of a circle is 12 inches the circumference is: 37.7 inches (diameter x pi = circumference).
Oh, dude, you're hitting me with some math here. So, to find the circumference of a circle with an area of 144π square inches, you first need to find the radius by taking the square root of the area divided by π (r = √(144π/π)). Once you have the radius, you can calculate the circumference using the formula C = 2πr. So, the circumference would be 24π inches. Cool, right?
They would have to give you enough information to eventually get the diameter. If they gave you the area of a circle and asked for the circumference, you can determine the radius, and from the radius the diameter, and then the circumference. If they said "What is the circumference if the area of a circle is 36pi?" Area of a circle is pi*r2, which would give us a value for r = 6 Diameter is 2*r, or = 12. Circumference is d*pi, or 12pi
If the diameter of a circle is 12 inches the circumference is: 37.7 inches (diameter x Pi = circumference).