Step-by-step explanation:
This parallelogram contains a right angle. This tells us that the parallelogram is a rectangle.
The diagonals in a parralelogram bisect each other.
The diagonals in a rectangle are congruent.
i assume that by 5 you mean 5 gallons.
(20)(0.25) = 15
removing 15 gallons reduces the tank from 20 to 5.
answer: 43/157
this is the answer and if you try to prove me wrong your a meanie