Multiple choice general knowledge math & puzzles

The length of a side of a square is equal to a length of a side of a heptagon. If the perimeter of the heptagon is 84 cm, what is the area of the square?

  1. 144 cm

  2. 144 cm^2

  3. Cannnot be determined

  4. 12 cm

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A regular heptagon has 7 equal sides. If its perimeter is 84 cm, each side measures 12 cm. However, the question only states that 'a length of a side' of the square equals 'a length of a side' of the heptagon - this is grammatically ambiguous. It could mean any one side length, not necessarily all sides being equal. Without clarity on whether the square's side equals the heptagon's side length (12 cm), the area cannot be definitively determined.