Answer:
Rational 7.8
Irrational Sqrt(61) approx=7.81
Explanation:
7.8 is a rational number because it is a terminating decimal. (That is, it ends; after the 8 there are no more numbers) Also, it can be written as a ratio, 7 4/5.
Squareroot(61) is irrational because it cannot be written as a ratio. Its decimal equivalent goes on forever without repeating or ending.