I did 25,000 - (-500) = 25,600
I did -500 (negative 500) because it is below the sea level and positive 25,000 because it above the sea level
Pythagoreon theorem
a^2+b^2=c^2
5^2+10^2=125 not 20^2
Answer:
![(x+4)^2+(y-6)^2=81](https://tex.z-dn.net/?f=%28x%2B4%29%5E2%2B%28y-6%29%5E2%3D81)
Step-by-step explanation:
We want to find equation of a circle with center (-4,6) and radius 9cm.
The equation of a circle with center (h,k) and radius
units is given by;
![(x-h)^2+(y-k)^2=r^2](https://tex.z-dn.net/?f=%28x-h%29%5E2%2B%28y-k%29%5E2%3Dr%5E2)
We substitute the radius and the center to obtain;
![(x+4)^2+(y-6)^2=9^2](https://tex.z-dn.net/?f=%28x%2B4%29%5E2%2B%28y-6%29%5E2%3D9%5E2)
The required equation is:
![(x+4)^2+(y-6)^2=81](https://tex.z-dn.net/?f=%28x%2B4%29%5E2%2B%28y-6%29%5E2%3D81)