# calculus

posted by
**rim** on
.

A water trough is 8 cm wie at the top, 50 cm wie at the bottom and 40 cm deep and 3 m long. Water is poured in at 1500cm ^3/s how fast is the water level rising when itis 20 cm deep?

posted by
**rim** on
.

A water trough is 8 cm wie at the top, 50 cm wie at the bottom and 40 cm deep and 3 m long. Water is poured in at 1500cm ^3/s how fast is the water level rising when itis 20 cm deep?