The square below is being reduced by a scale factor of one-third. What is the perimeter of the new drawing? Which side is 9cm.
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For example, a scale factor of 1:3 means that one triangle is 3 times bigger than the other. So, if the small triangle has a perimeter of 27, the big triangle has a perimeter 3 times as big. Doing the math, 3⋅27=81 - the big triangle's perimeter, then, is 81 units.
So, in your case, it would be all of the sides. A square is all equal, so all sides would be 9.
Hope this helps. :)
And if you still didn't get it, it was originally four sides, with a length of 3 on each. :)
To find the perimeter of the new drawing, we need to know the length of all the sides after the reduction.
We are given that one side of the original square measures 9 cm.
Since the square is being reduced by a scale factor of one-third, the length of each side of the new drawing will be one-third of the original length.
To calculate the perimeter, we multiply the length of one side by 4, as the square has four equal sides.
So, the length of each side of the new drawing will be (1/3) * 9 cm = 3 cm.
Since all sides of a square are equal, the length of all sides of the new drawing is 3 cm.
To find the perimeter, we multiply the length of one side by 4:
Perimeter = 4 * 3 cm = 12 cm.
Therefore, the perimeter of the new drawing is 12 cm.