if it's a circle it's: 706.9=pi(r2) which makes the diameter about 30.0009 cm
A circle with a diameter of 25 mm has an area of 490.9 square mm.
It works out as slightly over 30 mm
5000.Area of a square = 0.5*(diameter)^2
The area would be 12*18, or 216 square millimeters.
If you have a rectangle, measure the length and width of your surface in millimeters and multiply the values. This gives you the area in square millimeters. If you know the area in square meters, multiply by one million (1 000 000) to get square millimeters.
Using 3.14 as Pi the area of circle is: 961.625
A circle with a diameter of 25 mm has an area of 490.9 square mm.
It works out as slightly over 30 mm
Area = pi*182 = 1017.876 square mm to 3 decimal places
Well, honey, if the diameter of a circle is 7 mm, then the radius is half of that, which is 3.5 mm. The formula for the area of a circle is πr^2, so plug in 3.5 for the radius and you get an area of approximately 38.48 square millimeters. So there you have it, darling!
If the area is 81 millimeters, the side length is the square root of that, or 9 millimeters.
The area of a square with sides of length 7 mm: 7 millimeters times 7 millimeters are 49 square millimeters.
5000.Area of a square = 0.5*(diameter)^2
The area of square is : 2304.0
The area would be 12*18, or 216 square millimeters.
If you have a rectangle, measure the length and width of your surface in millimeters and multiply the values. This gives you the area in square millimeters. If you know the area in square meters, multiply by one million (1 000 000) to get square millimeters.
3.14 x 12.52 = 490.625 or round it up to 490.63 millimeters.