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.

Question

Mathematics

Darion Becker

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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Answers (1)

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Cornelius Ingram · Answer 1

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