Assume That Earth Is a Sphere with a Radius of 4500

question 154

Multiple Choice

Assume that Earth is a sphere with a radius of 4500 miles.The center of Earth is placed at the origin of a three-dimensional coordinate system.What is the equation of the sphere?

• A) \(2 x ^ { 2 } + 2 y ^ { 2 } + 2 z ^ { 2 } = ( 4500 ) ^ { 2 }\)
• B) \(2 x ^ { 2 } + y ^ { 2 } + z ^ { 2 } = ( 4500 ) ^ { 2 }\)
• C) \(x ^ { 2 } + y ^ { 2 } + z ^ { 2 } = ( 4500 ) ^ { 2 }\)
• D) \(x ^ { 2 } + y ^ { 2 } + 2 z ^ { 2 } = ( 4500 ) ^ { 2 }\)
• E) \(x ^ { 2 } + 2 y ^ { 2 } + z ^ { 2 } = ( 4500 ) ^ { 2 }\)

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