Lesson eLearning

What is the perimeter of a rectangle whose length is 8 cm and width is 3 cm?

easy MCQ 1 mark Class 3 · Mathematics · Shapes and Designs
  1. 11 cm
  2. 22 cm
  3. 24 cm
  4. 30 cm
Answer
22 cm

The correct answer is 22 cm — Step 4: Write the final answer as 22 cm.

Step-by-step solution

  1. Step 1: Recall that perimeter of a rectangle = 2 × (length + width).
  2. Step 2: Add the length and width: 8 cm + 3 cm = 11 cm.
  3. Step 3: Multiply the sum by 2: 2 × 11 cm = 22 cm.
  4. Step 4: Write the final answer as 22 cm.
Common mistake: Forgetting to multiply the sum of length and width by 2.

Concept tested: Perimeter of rectangle

Published · How this solution was prepared and checked

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