Circumference & Areas Size in Inches Circumference Inches Area in Square Inches 12 37.700 144.000 12 1/4 38.480 150.060 12 1/2 39.270 156.250 12 3/4 40.060 162.560 Click to see full answer. Likewise, what is the diameter of a 12 inch circle?So if the radius of the circle is 12″, then the area “A” is (approximately) 3.14 * 12^2 or about 3.14 * 144 = 452.16 square inches. If the diameter of the circle is 12″, then the radius is 6″ (half the diameter), and the area “A” is (approximately) 3.14 * 6^2 or about 113.04 sq.One may also ask, what is the circumference of a 14 inch diameter circle? Substitute this value to the formula for circumference: C = 2 * π * R = 2 * π * 14 = 87.9646 cm . You can also use it to find the area of a circle: A = π * R² = π * 14² = 615.752 cm² . Finally, you can find the diameter – it is simply double the radius: D = 2 * R = 2 * 14 = 28 cm . Also to know is, what is the circumference of a 12 foot diameter circle? To find the circumference of a circle, you will use the formula C=2⋅π⋅r ; therefore the circumference C is 2⋅π⋅6≈38 inches.What is the circumference of a 10 diameter circle?We know that C = πd. Since the diameter is 10cm, we know that C = π x 10cm = 31.42cm (to 2 decimal places).
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