Answer:
Surface Area: 278.5 m
Way Around: 81.4 m
Explanation:
So we can find the radius of the circle by taking 15 from 20, which results in 5.
The surface area of the pool will be the area of the rectangle + the area of the circle:
20 * 10 = 200
~~~
A = πr²
A = π(5)²
A = 78.5
200 + 78.5 is 278.5 m
Now, for the perimeter:
20 + 10 + 15 + 5 = 50 m
~~~
C = 2πr
C = 2π(5)
C = 31.4
50 + 31.4 = 81.4 m
I hope this helps! They may be looking for your to subtract the overlap, but as I am not sure if they are I left that out. Good luck and have a great day! :D