Answer:
The answer is D.
Step-by-step explanation:
All the numbers starting from 1 to infinity are known as natural numbers. Answer D is not a number but all the other answers are.
Sorry do know that one !!☹️
Multiply number of gallons by 16 (because 16 oz/ 1 gallon).
A=1/3h(b1-b2). So h=3/(b1-b2)