Question

Americans eat an average of 100 acres of pizza per year. That is equivalent to 4,356,000 square feet of pizza per year. How is the area expressed using scientific notation?

Answer 1

D.
`4.356 * 10^6` ft²

Explanation:

Scientific notation of a number is expressed in the following form,
`a * 10^b`

Where,

a = decimal number (1 ≤ |a| < 10)

b = the power of 10 whereby the scientific notation is equivalent to the original number.

To express 4,356,000 square feet in scientific notation, do the following:

1. Move the decimal point to the left up to the last non-zero digit = a = 4.356

2. Since we moved the decimal point by 6 decimal places, therefore, b = 6

3. Substitute the values of the variables into

Thus:

4,356,000 = 3. Substitute the values of the variables into

a * 10^b

Thus:

4,356,000 = 4.356 * 10^6