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Find the perimeter of a Square. a) 40cm of side b) 30cm of side

Mathematics

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Answers

2 parts
a

160 cm\text{160 cm}

b

120 cm\text{120 cm}

Step-by-step solution

4 steps

Step 1: Recall the formula for the perimeter of a square.
The perimeter PP of a square with side length ss is given by:

P=4×sP = 4 \times s

Part a· 2 steps

Calculate the perimeter for a square with a side of 40 cm.

  1. Substitute the side length into the formula.

    P=4×40 cmP = 4 \times 40 \text{ cm}

  2. Perform the multiplication.

    P=160 cmP = 160 \text{ cm}

    The perimeter of the square with a 40 cm side is 160 cm\boxed{\text{160 cm}}.

Part b

120 cm\text{120 cm}

Calculate the perimeter for a square with a side of 30 cm.

  1. Substitute the side length into the formula.

    P=4×30 cmP = 4 \times 30 \text{ cm}

  2. Perform the multiplication.

    P=120 cmP = 120 \text{ cm}

    The perimeter of the square with a 30 cm side is 120 cm\boxed{\text{120 cm}}.

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