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Q: What is the area of a circle with a diameter of 4.5 inches?

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The circumference of a circle with a diameter of 45 inches is 141.37 inches.

37 45/64 inches.

A 45-foot diameter circle has an area of 1,590.4 square feet.

Using 3.14 as Pi the area of circle is: 1589.6250000000002

The diameter of a circle with a circumference of 45 cm is: about 14.32 cm

area=pi r squared the r is the radius which is half of the diameter so area =pi mulitplied by 45 squared which is 6361.725124mm

Using 3.14 as Pi the area of circle is: 6358.500000000001

A=pi*radius2=pi*(diameter/2)2 A=pi*(45/2)2 = 1589.625 square feet if pi=3.14

If the circumference of a circle is 45 cm the length of the diameter in centimeters is: about 14.32 cm

The idea is to multiply the diameter by pi.

141.37

approximately 141.3

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