Mathematics, 28.01.2021 06:40, Jonah58

4)The diagram shows a circle inside a semicircle. The semicircle ABC has centre O and radius 9 cm. The circle has diameter OB. Calculate, in cm2, the shaded area.

Give your answer to 3 significant figures.

4)The diagram shows a circle inside a semicircle. The semicircle ABC has centre O and radius 9 cm.

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4)The diagram shows a circle inside a semicircle. The semicircle ABC has centre O and radius 9 cm. T...