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A piece of lead for a mechanical pencil is 3.15 × 10–4 meter in diameter.

What is the diameter of the lead in standard notation?
A.
31,500,000 meters

B.
3,150 meters

C.
0.000315 meter

D.
0.0000315 meter


Sagot :

Answer:

it is he answer is 7.

Step-by-step explanation: