Answer:
its octagon. first and last one it has total 8 sides

Compare to standard equation of SHM

Here


Well the above one are for extra knowledge .
Solution:-







So.

Answer:
8.0x
Step-by-step explanation:
Scientific notation means to write the answer in standard form. standard form helps you to express numbers that are too big or too small to be conveniently written in decimal form.
so for this case, it will be 4.571×10^-4.
when the number is decimal, you move the dot to the right and it will always be multiplying 10 to the power of a negative power.
1/4 . . . . ........ .. . . . . . . . .. . .. . . .. . . .