How many hectares does a rectangular field have if its perimeter is 0.6 km, and one side is twice as long as the other?

The field perimeter is 0.6 km, and one side is twice as long as the other.

Let one side – a km, then the other – 2a km. The perimeter is:

P = 0.6 = 2 * a + 2 * 2a.

2a + 4a = 0.6.

6a = 0.6.

a = 0.6 / 6.

a = 0.1 km – one side.

Another:

0.1 * 2 = 0.2 km.

Field area:

S = 0.1 * 0.2 = 0.02 km2.

Let’s translate into hectares:

1 km2 = 100 ha.

0.02 km2 = 2 ha.