Multiple choice

Calculate the surface area of hemisphere having the radius of $1.4$ cm.

  1. $1.232 cm^2$
  2. $12.32 cm^2$
  3. $123.2 cm^2$
  4. $1232 cm^2$
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B Correct answer
AI explanation

Apply the total surface area formula for a solid hemisphere, which is 3 pi r^2, using the radius 1.4 cm. Substitute the values to calculate 3 * (22/7) * (1.4 * 1.4). This results in 3 * 22 * 0.28, which equals 12.32 square centimeters.

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