Landscape Maths: Catch-Can Rates and Supplied Runtime Targets

Landscape Maths: Catch-Can Rates and Supplied Runtime Targets

Original quantitative topic practice in English. All 24 questions are included in a shuffled order. Each question supplies its own data and model assumptions; use only those assumptions. Choose one answer. Practice target: 20/24, not an official examination pass mark. Keep full intermediate precision. These exercises cover the calculation scope in the title; they do not constitute a full Red Seal examination, trade qualification, site design or operating specification.
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In a simplified irrigation audit, four equal-area catch cans collect depths 7, 9, 11, 9 mm during a 20-minute run. Mean collected depth represents application. A separate plan supplies target gross application 14 mm over an area of 175 m². Assume the measured rate stays constant. Do not infer a plant watering recommendation or compensate for distribution variation. Calculate the catch-depth range in millimetres. Keep intermediate values unrounded; round the final answer to 4 decimal places if needed.