Answer:
7630
Step-by-step explanation:
We have that the distance of a comet from Earth is about 7.63*10³ .
This number is given in scientific notation.
We want to write this number in standard form.
Since we are multiplying by a power of 10, we move forward three times.
Therefore in standard form:
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<em>C. 15 feet</em>
<em>Area formula</em>
<em>A = l²</em>
<em>225 = l²</em>
<em>l = √225</em>
<em>l = √15²</em>
<em>l = 15 feet</em>