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anonymous
 one year ago
The area of two sphere have the ratio 4:25. what is the ratio of the radii?
anonymous
 one year ago
The area of two sphere have the ratio 4:25. what is the ratio of the radii?

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amistre64
 one year ago
Best ResponseYou've already chosen the best response.0how do you determine the area of a sphere?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry, but I don't know how ..

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0\[\huge~\rm~A=\pi~r^2\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh wait can i use the formula for sa surface area of the sphere?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.04(4piR^2)=25(4piR^2) like this?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0area of surface of sphere=4 pi r^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ 4 \pi r^2 }{ 4 \pi R^2 }=\frac{ 4 }{ 25 }\] \[\frac{ r }{ R }=?\]

amistre64
 one year ago
Best ResponseYou've already chosen the best response.0if r^2 = 4 and R^2 = 25 what are the values of r and R ?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.0as far as ratios go, there is a property: quadratics are the square of linears radius is a linear measure, area is a quadratic measure.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ r^2 }{ R^2 }=\frac{ 4 }{ 25 },\frac{ r }{ R }=\sqrt{\frac{ 4 }{ 25 }}=?\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and the ratio is 2:5...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I did not realize that I can cancel the 4 pi and squared both sides haha
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