It is not possible to have a circle with an area of 100 metres. Areas must be measured in square units, such as square metres.
Assuming that the circle had an area of 100 sq metres, its radius would be 5.64 metres (to 2 dp).
radius = square root of 100pi/pi = 10 meters
Radius 10, area = 100 pi; radius 9, area = 81 pi
A circle with a radius of 100 units has a circumference of 628.32 units.
Radius = 20/2 = 10 Area of circle = pi x radius x radius = 3.1415 x 10 x 10 = 3.1415 x 100 = 314.15 square units
The area of a circle of radius 12 is 144 pi; the part of the circle defined by such an arc (the arc itself, of course, has an area of 0) is 100/360 of that, which simplifies to 40 pi. To 3 significant digits, that is 126.
radius = square root of 100pi/pi = 10 meters
The area of a circle with a radius of 100 is: 31,420 square units.
Use the equation: Area of Circle = pi * r^2 so... 100 pi = pi * r^2 The pi's cancel out. 100 = r^2 Square both sides to find the radius. square root(100) = r, the radius of the circle
I suggest you use the standard formula for the area of a circle. Then, convert the area from square meters to hectares (1 ha = 10,000 m2).
Diameter is 20 meters, hence radius is 10 meters. Area of circle = pi * r * r = 3.1415 * 10 * 10 = 3.1415 * 100 = 314.15 square meters
The formula for the area (A) of a circle is A = πr2. If the area is 100π then 100π = πr2 : 100 = r2 : r = √100 = 10. The radius is of length 10 units.
A circle with a radius of 50 mm has an area of 7853.98 square mm
Radius 10, area = 100 pi; radius 9, area = 81 pi
Knowing that the area of a circle is its radius squared times Pi, the area of a 10 ft radius circle is 100*Pi square ft, or about 314 square feet.
This is the area of a circle with a radius of 100 miles →area = π × radius² = π × (100 miles)² = 10,000π sq miles ≈ 31416 sq miles
The area of a circle with a radius of 10 cm would be 100 times pi, or, rounded to the nearest hundreth, 314.15 cm2.
Using 3.14 as Pi the area of circle is: 314.0