Answer:
The circumference is equal to 
Step-by-step explanation:
we know that
by proportion

The answer is
4.25.
All you have to do is find the difference (0.5), half it (0.25) and add it to the smallest number.
Hope this image helps!!!!!
Answer:
i think 1000
Step-by-step explanation:
if 10 to the 5th power is 100000 and 10 to the 2nd power is 100 and you divide them the answer is 1000