Volume of cylinder = πr²h
Volume = π (12)² × 17
= 2448 π units³
Thus the answer is (d)
Integers are written without no fractional components so 12 is an integer .
Natural numbers are positive numbers just like the number we count. 12 is a natural number.
Rational numbers
you would multiply speed by time
20 feet per second times 10 seconds = 200 feet total
