80 km because if the units number is smaller than five then you go to eighty but if the number is five or more you have to go to ninety but the number is smaller so i went to eighty.
Distribute 6 thru the parenthesis=
198 pie plus 6 pie
Factor out the perfect square=
Pie 3 to the second power times 22 plus 7 pie 6
Calculate the square root =
3 pie 22 plus 7 pie 6
Which equals to 31.2177
Answer: 4a
Step-by-step explanation: