The length of the rectangle is 1dm, which is 6 cm longer than its width. What is the perimeter of this rectangle?

Decision:
1 dm = 10 cm.
1. Calculate the width of the rectangle:
10 – 6 = 4 cm.
2. The perimeter of the rectangle is
P = 2 * (a + b);
Find out the perimeter of this rectangle:
P = 2 * (10 + 4) = 2 * 14 = 28 cm.
Answer: The perimeter of this rectangle is 28 cm.



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