MATHEMATICS QUIZ #1

1. The area of a circle is calculated using the formula A=πr2, where 'r' is the radius.

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2. If the diameter of a circle is 8 cm, its area is 16π square cm.

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3. Doubling the radius of a circle doubles its area.

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4. The area of a circle is always greater than its circumference. area than a circle with a smaller diameter.

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5. If the radius is less than 2, the circumference is larger.

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6. The diameter is needed to calculate the area of a circle, the radius is not.

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7. A semi-circle's area is exactly half the area of a full circle with the same diameter.

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8. If two circles have the same radius, they have the same area.

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• FALSE

9. The value of π used in the area formula is exactly 3.14.

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10. If the circumference of a circle is 6π cm, its area is 9π square cm.

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• FALSE