Q1 of 46 Page 61

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The central angle of a semicircle is _________

The central angle of a semicircle is always 180°.

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The number of quadrants in a circle is_______

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Quadrant of a circle is ______ of the circle.

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The central angle of a quadrant is _______

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If the area of a semicircle is 84 cm2, then the area of the circle is _______