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anonymous
 5 years ago
The celestial sphere shown at right has radius
9 inches. The planet in the sphere’s center
has radius 3 inches. What is the ratio of the
volume of the planet to the volume of the
celestial sphere? What is the ratio of the
surface area of the planet to the surface area
of the celestial sphere?
anonymous
 5 years ago
The celestial sphere shown at right has radius 9 inches. The planet in the sphere’s center has radius 3 inches. What is the ratio of the volume of the planet to the volume of the celestial sphere? What is the ratio of the surface area of the planet to the surface area of the celestial sphere?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What is the formula for the volume of a sphere?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0well find the volume of each one first where the first volume has r=9 and the second has r=3 Why do we want the volume? Well we want to compare them right.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i have for r=9 is 972pi3

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Looks right but Im wondering where the 3 came from :P in pi3 I think you put it in by mistake.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you know what ratio is right? basically a fraction and fractions is when you divide. You have to values so you divide one value with the other and you have the ratio

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so that mean 1:3 right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0is \[\frac{972\pi}{36\pi}\] 1:3?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if tha's what is then yes for the volume. Do the same for surface area. Find the formula for surface area and use r=9 and r=3
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