Multiple choice

Find the length of the wire required to go $15$ times round a square field one hectare in area.

  1. $4500m$
  2. $4000m$
  3. $6000m$

  4. NONE OF THESE
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

One hectare is 10,000 square meters, so the side of the square is 100m. The perimeter is 4 * 100 = 400m. For 15 rounds, the total wire length is 15 * 400 = 6000m.

AI explanation

Using the area of a square formula, the side length of the field is the square root of 10000 square meters, which is 100 meters. The perimeter formula for a square gives 4 multiplied by 100 meters, resulting in 400 meters for one round. Multiplying 400 meters by 15 rounds gives a total wire length of 6000 meters.

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