Answer:
4g-2/5
Step-by-step explanation:
The formula for finding area of a circle is

.
Essentially, we have two circles here. One is a larger outer circle, and the other in a smaller inner circle. In order to find the area of the sidewalk, we must find the area of the outer circle, then find the are of the inner circle. After we find both areas, we subtract.
See attached image for process of finding area, and subtracting areas to find the final area of the sidewalk.
Answer: the answer is D
Step-by-step explanation:
Answer:
2w + 4
Step-by-step explanation:
2/5(5w + 10)
2w + 4 ## ^ 2/5ths of 5 is 2, and 2/5ths of 10 is 4. (Distributive POE)
Make up it but the answer is 168