A: Xiaoming weighed 39 kilograms last year.
(2). 1350 ÷ 30 = 45 (kg)
A: Pig farms use an average of 45 kilograms of feed every day.
(3) .56160 ÷ 486 =115.555 ... (minutes)
A: It takes a spaceship 1 15.555 ... minutes to orbit the earth.
How can the third question be a circular decimal? Have you got the wrong question?
Satisfied, please adopt.