HELP Please I will give Brainliest if correct! (please explain)

Answer:
40000000000 Or 4 x 10¹⁰
Step-by-step explanation:
If See The First Number You See 38 And Round 38 To The Nearest 10 And You Get 40, So Just Make The Number You Have 40000000000 Or 4 x 10¹⁰