First of all, there is no reason to suppose that the area is circular as opposed to rectangular or triangular or some other simple or complicated shape. If, on the basis that the question asks for the radius, you assume that it is a rectangle, then the radius is 0.564 km = 564 metres.
5
Square root (1 km^2) = 1 km.
1 square mile = 2.59 square km 1 square km = 0.39 square mile
An area of 5km radius implies a circle. The area of a circle of radius r is {pi}r2. Area ~= 3.14 x 5 x 5 km2 ~= 78.54 km2.
Answer: 1 mi² = 2.58998 km²
A circle with a radius of 126 km has a circumference of 791.68 km.
6362 square kilometres.
The surface area of Mars is approximately 144,798,500 square kilometers. The equatorial radius is about 3,396 km and the polar radius is 3,376 km.
Area of a circle = (pi) x (square of radius) = (pi) x (5)2 = 25 pi = 78.54 square km (rounded)
314.16 square k,.
A circle with a radius of 0.9 km has an area of 2.54 square km
Square root (1 km^2) = 1 km.
1 square km = 1 million square metres.
It is: pi*352 = 3848.451 square km to 3 decimal places
1 square mile = 2.59 square km 1 square km = 0.39 square mile
1 square km of gravel
It is: 4*pi*64002 square km
1 square mile = about 2.6 square km (2.58998811 square kilometers).