A kite is 30 feet horizontally and 40 feet vertically from an observer and is moving...

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A kite is 30 feet horizontally and 40 feet vertically from an observer and is moving horizontally at 10 ft/sec (away from the observer) and decreasing in altitude at the rate of 6 ft/sec. At what rate is the length of the string changing? Is the length of the string increasing or decreasing? A kite is 30 feet horizontally and 40 feet vertically from an observer and is moving horizontally at 10 ft/sec (away from the observer) and decreasing in altitude at the rate of 6 ft/sec. At what rate is the length of the string changing? Is the length of the string increasing or decreasing?