Answer:

hope it helps if it helps don'tforget to like and mark
Answer:
810 is 100 times the size of 0.81
Answer:
Ashley uses internal citation to give credit for someone else's idea
Answer:
293.5
Step-by-step explanation:
40×50/2
=1000 cm²
π×15²
3.14×225
706.5
1000-706.5=293.5 cm²
If you give the clues I could help.