Answer:
An expression = [tex]3^{9}[/tex]
The area of San Bernardino County is 19,683 square miles.
Step-by-step explanation:
The are of San Bernardino County is about 3 to the 9 power square miles.
Here 3 to the 9 power means " base 3 and the exponent is 9"
= [tex]3^{9}[/tex]
This means we have to multiply 3 itself by 9 times.
[tex]3^{9}[/tex] = 3.3.3.3.3.3.3.3.3
= 9.9.9.9.3
= 81.81.3
= 6561.3
= 19,683 square miles
The area of San Bernardino County is 19,683 square miles.
