Multiple choice

What is the area of circle with radius 4.5 cm? (Use pi = 3.14)

  1. 62.7 cm2

  2. 62.9 cm2

  3. 63.6 cm2

  4. 63.9 cm2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Area = pi * r^2 = 3.14 * (4.5)^2 = 3.14 * 20.25 = 63.585. Rounding to one decimal place gives 63.6.

AI explanation

The area of a circle is calculated as pi multiplied by the square of its radius. Squaring 4.5 cm gives 20.25 sq cm, and multiplying this by 3.14 results in 63.585 sq cm. Rounding to one decimal place gives 63.6 cm2.

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