Answer:
30
Step-by-step explanation:
45-15
Its 50. Because circumference is 314. Divide that by 3.14 and you get the diameter. Divide by another 2 and you get 50.
The answer is 4^10
How to do it:
4^2•4^8 goes into
4^2+8 which 2+8=10
So,
The answer: 4^10