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UkoKoshka [18]
3 years ago
5

Find an equation of the sphere with center s23, 2, 5d and radius 4. What is the intersection of this sphere with the yz-plane?

Mathematics
1 answer:
spayn [35]3 years ago
7 0

Answer:

Equation: (x+3)^2+(y-2)^2+(z-5)^2=16

Intersection: (y-2)^2+(z-5)^2=7

Step-by-step explanation:        

We are asked to write an equation of the sphere with center center (-3,2,5) and radius 4.    

We know that equation of a sphere with radius 'r' and center at (h,k,l) is in form:

(x-h)^2+(y-k)^2+(z-l)^2=r^2

Since center of the given sphere is at point (-3,2,5), so we will substitute h=-3, k=2, l=5 and r=4 in above equation as:

(x-(-3))^2+(y-2)^2+(z-5)^2=4^2

(x+3)^2+(y-2)^2+(z-5)^2=16

Therefore, our required equation would be (x+3)^2+(y-2)^2+(z-5)^2=16.

To find the intersection of our sphere with the yz-plane, we will substitute x=0 in our equation as:

(0+3)^2+(y-2)^2+(z-5)^2=16

9+(y-2)^2+(z-5)^2=16

9-9+(y-2)^2+(z-5)^2=16-9

(y-2)^2+(z-5)^2=7

Therefore, the intersection of the given sphere with the yz-plane would be (y-2)^2+(z-5)^2=7.

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