Multiple choice

The area of a circle whose diameter is 1.4 cm is

  1. $1.54\ cm^2 $
  2. $0.77\ cm^2 $
  3. $6.16\ cm^2 $
  4. None of these

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

The diameter is 1.4 cm, so the radius is 0.7 cm. The area is pi * r^2 = (22/7) * 0.7 * 0.7 = 22 * 0.07 = 1.54 cm^2.

AI explanation

Using the diameter of 1.4 cm, the radius is r = 0.7 cm. Applying the area of a circle formula, Area = pi times r squared, we get 22/7 times 0.7 times 0.7. This calculates to 1.54 square cm.