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24 September, 00:56

A landscape gardener wishes to spread fertiliser on a semicircular garden bed that has a diameter of 4.7 m. How much fertiliser is required if the fertiliser is applied at the rate of 20 g per square metre? Give your answer to the nearest gram.

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  1. 24 September, 02:34
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    Step-by-step explanation:

    radius of semicircle = 4.7/2 m

    area of semicircle=1/2 πr²

    =1/2 * π * (4.7) ²

    ≈8.67 m²

    fertiliser=8.67*20

    =173.4

    ≈173 gm
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