7.380 times 10 to the 9th power (or 7.38 times 10 to the 9th power)
Multiply 13 by 3
13 * 3 = 39 miles
Hope this helps :)
Answer:
circumference is 21.99 and area is 47 and 2/35 unit squared sorry if its a little late
The answer is d its decreasing
X can equal 10,000 because 10,00 divided by 2 is 5000, which is 4 digits