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How do I work this out?

How do I work this out?-example-1

1 Answer

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Area of the shaded part is given by:
A=(area of the sector)-(area of triangle)
A=(θ/360πr²)-(1/2sinθab)
A=(120/360*π*6²)-(0.5*6²*sin120)
A=12π-15.59
A=22.1 cm²

Answer: A=22.1 cm²
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