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Area and Volume - Area and Volume(II Form 2 Section A...

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1 Area and Volume (II) Form 2 Section A Multiple Choice Questions 1. The ratio of the radii of two circles is 2 : 3. Find the ratio of their circumference. A. 3 : 2 B. 2 : 3 C. 1 1 : 2 3 D. 3 2 : 2 2 2. If the radius of a circle is increased by 1 cm, then its circumference is increased by 3. The sum of the areas of two circles is 85 cm 2 . If the radius of one circle is 7 cm, find the radius of the other circle. 4. In the figure, the area of the smaller circle is 121 cm 2 . If the radius of the larger circle is 7 cm longer than that of the smaller circle, find the area of the shaded region. 5. Find the perimeter of the sector OAB in the figure.. A. 20 3 cm B. 20 16 3 cm C. 10 16 3 cm D. 80 16 3 cm
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