Thus, d has to be negative, and you get:
What is the surface area, in square inches, of a sphere with radius 3.5 in.?
2 answers:
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Thus, d has to be negative, and you get:
Answer:
Step-by-step explanation:
A ball is the solid inside a surface which is a sphere.
The equation of a sphere has the form:
Where (h,k,s) is the center and r is the radius.
When we plug the given center (7,1,-1) and radius 3 we get:
Then we turn this into an inequality: Since the ball is inside the surface we must use the symbol.
Then we just subtract 9 from both sides to get: