The area of the rectangular field = 8 hectares, the length of the field = 2 km. Find the perimeter of the field.

The area of the rectangular field = 8 hectares, the length of the field = 2 km. Find the perimeter of the field. How many kg of seeds will it take to sow this field if 20 grams is needed for 1 m2?

Let’s convert hectares to square meters:

1 ha = 10,000 m2.

8 ha = 80,000 m2.

Let’s convert kilometers to meters:

2 km = 2000 m.

Let’s calculate the width of this piece of land using the formula b = S: a:

b = S: a = 80,000: 2000 = 40 meters.

The perimeter of a rectangular field is found by the formula P = a + a + b + b:

P = a + a + b + b = 2000 + 2000 + 40 + 40 = 4080 meters.

Let’s find how many seeds you need:

80000 * 20 = 1600000 grams = 1600 kg.

Answer: the perimeter is 4080 meters and 1600 kg of seeds are required.