The perimeter of the square is 20 cm This square was cut into 2 identical rectangles. What is the perimeter of each of them?
The perimeter P of the square is 20 cm.
The square is divided into two identical rectangles.
Find the side of the square using the formula a = P: 4:
a = P: 4 = 20: 4 = 5 cm.
When divided into rectangles, one side is equal to the side of the square, and the other side is equal to half the side of the square.
That is, the length a of the rectangle will be 5 cm, and the width b = a: 2 = 5: 2 = 2.5 cm.
Let’s calculate the perimeter of both quadrangles:
P = a + a + b + b = 5 + 5 + 2.5 + 2.5 = 15 cm.
Answer: The perimeter is 15 centimeters.
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