Scientists discovered a large star 123,000 light years from earth. a light year is about 5,880,000,000,000 miles.

what is the distance of the large star from earth in scientific notation?

The answer is D. 7.2324 x 10^17 mi

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

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step-by-step explanation:

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