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The problem states that a rectangular board has a long side of 18 cm and a short side of 12 cm. We need to find the perimeter of the board.

GeometryPerimeterRectangleGeometric Formulas
2025/3/20

1. Problem Description

The problem states that a rectangular board has a long side of 18 cm and a short side of 12 cm. We need to find the perimeter of the board.

2. Solution Steps

The perimeter of a rectangle is given by the formula:
P=2∗(length+width)P = 2 * (length + width)
In this case, the length is 18 cm and the width is 12 cm.
Substituting these values into the formula, we have:
P=2∗(18+12)P = 2 * (18 + 12)
P=2∗(30)P = 2 * (30)
P=60P = 60

3. Final Answer

The perimeter of the board is 60 cm.

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