Which nonterminating decimal can be converted into a rational number?

Question

0.818118111...
0.020304050...
0.010110111...
0.321321321... ***

George has a square sandbox in the backyard. The sandbox has an area of 160 square feet. To the nearest foot, what is the length of one side of the sandbox?

11 ft
12 ft ***
40 ft
80 ft

A number can be rational and irrational. True or false?

True, I think?

Thanks for helping me out!

Answer 1

1. You're correct, because the decimal repeats digits, it's considered rational.

2. I believe that's correct. It doesn't come out to 160ft^2, of course, but it's sure close at least.

3. This is false, actually. Rationals and Irrationals form their own separate, distinct categories regardless if both of them are still real numbers.

Answer 2

isnt it 40 cause the sandbox is a square so u divide 160 by 4 and get 40.