Multiple choice general knowledge math & puzzles

area of the largest square in a circle of radius 10 cm is

  1. 220 / 7 sq cm

  2. 200 sq cm

  3. 100 sq cm

  4. 70 sq cm
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The largest square inside a circle has its diagonal equal to the circle's diameter. For radius 10 cm, diameter = 20 cm. If diagonal = 20, then side = diagonal/√2 = 20/√2 = 10√2. Area = side² = (10√2)² = 200 sq cm. The claimed answer B is correct. Option C (100) would be if side = 10, but the diagonal constraint makes the square larger.

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