hi everybody, again i'm asking your's help as i have solved some DE problems, it seems to me that i've done all correct but as always my results don't match with those are given i the book.

1. water flows with the speed of 1,8 liters/sec in the box which has a form of parallelepiped with size 0,6 x 0,75 meters and height 0,8 meters. there is a hole in the bottom of the box with area 2,6 cm^2. calculate the time after which the box will be full.

2. a funnel has a form of cone with radius R=0,06 meters and height H=0,1 meters. it is set as its top looks down. calculate time in which all water will flow out of it, if it has a hole with diameter of 0,5 cm.

first one is weird but second one has answer of 28 seconds. i used g=10