water is being siphoned from a cylindrical tank of radius 10m into a rectangular tank whose base measures 20m by 15m. if the depth of the water in the cylindrical tank in decreasing at a rate of 2m/s, at what rate is the depth of the water increasing in the rectangular tank

Answer 1

the ratio of the cross-sections is

300/100π = 3/π

so, the rectangular tank fills up π/3 times as fast, at a rate of 2π/3 m/s