A measuring flask.
the instrument that the used was an intelligent brain
I suggest you use liters.
A measuring cylinder
Liters.
A Pencil
pencil
Some instruments you can use to find the mass of an object are:Mass scaleTriple beam balance
A Pencil
Use a temperature gun.
All you need is a scale. you should use a scale that measures in grams.
The easiest way is to use a conversion formula. There are about 0.264 US gallons in one liter. Therefore, use this formula to answer your question: liters x 0.264 = US gallons90 liters x 0.264 = about 23.775 US gallons
there are 1000 Liters in a gallon