A swimming pool is 20 ft wide, 40 ft long, 3 ft deep

A swimming pool is 20 ft wide, 40 ft long, 3 ft deep at the shallow end, and 9 ft deep at its deepest point. A cross-section is shown in the figure. If the pool is being filled at a rate of 0.8 ft^3/min, how fast is the water level rising when the depth at the deepest point is 5 ft?

[@user-lz4jz6pv6l]

THANK YOU SO MUCH! ive been stressing over this for like a week and i finally understood it. u are the goat.

[@LJ_Brostep_Productions]

this is a lot of work and prior knowledge just to answer one question 😩