Answer:81
Step-by-step explanation:
Because the square root of 81 is 9 which is a perfect square
Answer:
Step-by-step explanation:

The last three are rational numbers because whole numbers can’t be rational
Answer:
19 quarts can i get brainliest
Step-by-step explanation:
4.5, 4, 3.5, 3, 2.5, 2 and use the pencil and ruler, love a bit of MathsWatch