Multiple choice

What will be the area of the sector with sector angle as 120° and radius of circle as 21 cm?

  1. 460 cm2

  2. 462 cm2

  3. 480 cm2

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Area of sector = (theta/360) * pi * r^2 = (120/360) * (22/7) * 21 * 21 = (1/3) * 22 * 3 * 21 = 22 * 21 = 462.

AI explanation

The area of a sector is calculated using the formula (angle divided by 360) times pi times the radius squared. Substituting the given values gives (120 divided by 360) times 22/7 times 21 times 21, which simplifies to an area of 462 cm2.

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