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).
A circle with a radius of 10 meters has an area of 314 square meters.
7100 (square meters) = 0.71 hectares
150,000 meters squared?!
Multiply the meters to get square meters, then divide by 10,000 to convert to hectares. Alternately, you can consider the hectare as a square of 100 x 100 meters, and see how many of those squares will fit into your rectangle.
Area of a circle: pi*radius squared
do you mean "How many hectares in a circle of 50 km radius?" area is 7,854 sq meters or 0.7854 hectare
Approx 12.57 hectares.
A circle with a radius of 10 meters has an area of 314 square meters.
A circle with a radius of 10 meters has an area of 314 square meters.
1 hectare = 10,000 meters2Area of 800 meters radius = (pi) R2 = 2,010,619.3 meters2 = 201.06 hectares (rounded).
A circle with a 500 meter radius has an area of a little over 194 acres. However, if you're going to use meters for the radius you should use hectares for the area; it's pretty close to 78.54 hectare.
10cm or 0.05meters
0.08 hectares is 800 square meters. (hectares x 10,000 = square meters)
23 hectares is 230,000 square meters.
0.004 hectares is 40 square meters.
128 (square meters) = 0.0128 hectares.
272.066 acres