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Q7 Please help Question 7 I A child throws a stone into a pond, causing a circular ripple to spread. The ripple's radius increases at

Q7 Please help

Question 7 I A child throws a stone into a pond, causing a circular ripple to spread. The ripple's radius increases at a rate of 0.5 metres per second. How fast is the area of the ripple increasing when the radius is 20 metres? Area

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