The ratio of the surface areas of two spheres is 729:64.
Find the radio of their radii.
ratio??
2007-05-31 9:51 pm
回答 (1)
2007-05-31 9:59 pm
✔ 最佳答案
Let x and y be the radii of two spheres respectively.Since all sphere are similiar,
x^2:y^2=729:64
(x:y)^2=729:64
x:y=sq.root(729:64)
x:y=sq.root(729):sq.root(64)
x:y=27:8
so the ratio of their radii is 27:8
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