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How much is a quarter without ridges worth?
About a quarter. The edges were most likely filed down or is a decorative coin for jewelry.
How do you work out the area of a quarter of a circle?
It is: (pi*radius2)/4
What is the circumference of a quarter?
The diameter of a quarter is 24.26 mm. Circumference is pi* diameter. 24.26 mm * 3.14159=76.21 mm
How do you find the area if the perimeter is only given?
If you are talking about a rectangle, you can't find the area from just the perimeter. With a perimeter of say 80 units, the sides could be 10 and 30, with an area of 300 square units. But the sides could also be 5 and 35, with an area of 175 square units. There are lots of other possibilities. If you are talking about a square, that's different. Each side is a quarter of the perimeter, so the area is a quarter of the perimeter multiplied by a quarter of the perimeter.
What is the area of a three quarter inch diameter circle?
Area = pi*3/82 = 0.4417864669 or 0.442 correct to three decimal places
