The width of the rectangular summer cottage is 20m, the length is 30m. How many meters of rope will you need to pull it to mark the border of the site? How many pegs will you need to pull the rope on them? Pegs must be driven in every 2m 5dm.
To complete this task, first of all, we calculate what the perimeter of the site is, knowing. that the width is 20 meters and the length is 30 meters.
P = 2 * (20 + 30) = 2 * 50 = 100 meters.
Let’s convert meters to decimeters.
1 meter = 10 decimeters.
100 meters = 1000 dm.
2 m 5 dm = 2 * 10 + 5 = 25 dm.
Let’s calculate how many pegs are needed to pull the rope over them.
1000/25 = 40 pieces.
Answer: 40 pieces.
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