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anonymous
 4 years ago
Patrick is using a weed killer to treat his circular lawn which a diameter of 12 metres. The weed killer instructions say to use 20 ml for every square metre of lawn to be treated. How much weed killer does he need to use? Give your answer to the nearest ml.
anonymous
 4 years ago
Patrick is using a weed killer to treat his circular lawn which a diameter of 12 metres. The weed killer instructions say to use 20 ml for every square metre of lawn to be treated. How much weed killer does he need to use? Give your answer to the nearest ml.

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0area = pi*r^2 area = pi*6^2 area=36pi m^2 weed killer = (20 ml )(36 pi m^2)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.020*36*pi = answer in ml

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0diameter = 12m ==> radius = 6m area of circle = πr^2 = 3.14 * (6m)^2 = 3.14*36m^2 = 113.04m^2 for 1 m^2 area wed killer required = 20 ml so for 113.04m^2 area, weed killer required = (20 * 113.04) ml = 2260.8 ml = 2261 ml

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0technically 2262 if you use full pi

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0and dont round till the end like you're supposed to
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