10. [-/1 Points] DETAILS TANAPCALC10 3.6.066.EP. MY NOTES PRACTICE ANOTHER Water flows from a tank of constant cross-sectional area 80 ft through an orifice of constant cross-sectional area 1.4 ft- located at the bottom of the tank. Initially, the height of the water in the tank was 20 ft, and t sec later is given by the equation 40 2Vh + -t -2V20 =0 0sts 80v 20. Differentiate the given equation with respect to t. dh dt How fast (in ft/s) was the height of the water decreasing when its height was 16 ft? ft/s