what is total rain fall?

Question

A rainstorm lasts for 6.3 hours, building from a drizzle to a heavy rain, then dropping back to a drizzle. The rate, r, of the rain (in inches per hour) is given by

r = 0.2t; 0 < t < 4.5

r = 3.15 - 0.5t; 4.5 < t < 6.3

where t is the time in hours. What is the total rainfall?

Answer 1

rain can be lityla drops of water from the sky

Answer 2

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