Answer: Step 2
Step-by-step explanation:
The scale factor is defined as image/preimage, so since the image is circle F and the preimage is circle E, k should be equal to (radius of F)/(radius of E), or 1/2, not 2.
10^12 in standard number is 1000000000000
<h3>How to convert the number?</h3>
The number is given as:

Expand the expression

Evaluate the product

Hence, 10^12 in standard number is 1000000000000
Read more about standard number at:
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Numbers that can easily be added to each other
Ex. 1.00 + 1.00 Is obviously 2.00 meaning its not hard to solve