I was wondering if I could have help figuring out questions 10, 11, 23 in chapte

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I was wondering if I could have help figuring out questions 10, 11, 23 in chapters 3.5 of technical calculus with analytical geometry 5th edition.

10)A stonetossed into a lake sends out circular ripples whose area increasesat the rate of 520ft^2/s. How fast is the radius increasing when the radius is 30ft?

11) A stone tossed into a lake sends out a circular ripple whose radius is increasing at the rate of 1.9ft/s. How fast is the area increasing at the end of 10 seconds?

23) A baseball player who is coming in from third base at 24ft/s. What is the rate of change of his distance from second base when he is 25ft from home plate? A baseball diamond is 90-ft square.

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