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  1. The ratio of the numbers giving the measure of the circumference and the area of a circle of radius 3 cm is
    1. 1 : 3
    2. 2 : 3
    3. 2 : 9
    4. 3 : 2
Correct Option: B

Using Rule 14,
Circumference of circle= 2πr
= 2π × 3 = 6π cm
Area of circle = πr² = π × 3 × 3 = 9π cm²
∴ Required ratio = 6π : 9π= 2 : 3


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