Lesson eLearning

If the perimeter of a square step is 20 cm, find the length of each side and the area.

medium 2 marks Class 2 · Mathematics · The Longest Step
Answer
Side = 5 cm, Area = 25 cm²

The correct answer is Side = 5 cm, Area = 25 cm² — Calculate: A = 5² = 25 cm².

Step-by-step solution

  1. Use formula for perimeter of square: P = 4×side.
  2. Set 20 cm = 4×side and solve: side = 20 ÷ 4 = 5 cm.
  3. Use area formula for square: A = side².
  4. Calculate: A = 5² = 25 cm².
Common mistake: Dividing perimeter incorrectly or squaring wrong

Concept tested: Perimeter and area of square step

Published · How this solution was prepared and checked

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