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The perimeter of a square is 40 cm. What is the length of one side? (2021)

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Question: The perimeter of a square is 40 cm. What is the length of one side? (2021)

Options:

  1. 5 cm
  2. 10 cm
  3. 15 cm
  4. 20 cm

Correct Answer: 10 cm

Exam Year: 2021

Solution: 

Perimeter = 4 × side. Therefore, side = Perimeter / 4 = 40 cm / 4 = 10 cm.

The perimeter of a square is 40 cm. What is the length of one side? (2021)

Practice Questions

Q1
The perimeter of a square is 40 cm. What is the length of one side? (2021)
  1. 5 cm
  2. 10 cm
  3. 15 cm
  4. 20 cm

Questions & Step-by-Step Solutions

The perimeter of a square is 40 cm. What is the length of one side? (2021)
  • Step 1: Understand that a square has 4 equal sides.
  • Step 2: Know the formula for the perimeter of a square, which is Perimeter = 4 × side.
  • Step 3: We are given that the perimeter is 40 cm.
  • Step 4: To find the length of one side, we can rearrange the formula: side = Perimeter / 4.
  • Step 5: Substitute the given perimeter into the formula: side = 40 cm / 4.
  • Step 6: Calculate the result: side = 10 cm.
  • Perimeter of a Square – The perimeter of a square is calculated by multiplying the length of one side by 4.
  • Division – Understanding how to divide the total perimeter by the number of sides to find the length of one side.
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