Hi there, the answer is:

1.42 is because the first number in scientific notatation has to be between 0 and 10. To get our answer we must multiply by 10^7.
Answer:
pi = 3.141592653589793238462643
Step-by-step explanation:
that's how we came up with pi simply being 3.14 and why pi day is 3/14 every year
Convert both fractions to get a LCD, then subtract
Answer is 3. 1/24
I have seen a Question already answered Today which was this, and the Answer is B.