2 to 15 is equivalent to 4 to 30
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The ratio is sqrt(36) : sqrt(225) which is 6 : 15 or 2 : 5
If the ratio is 2 : 7 then the volumes are in the ratio 8 : 343.
As volume is length x length x length, cube the ratio of the lengths, thus: Ratio of lengths = 2 : 5 ⇒ Ratio of volumes = 23 : 53 = 8 : 125
The ratio of area is 4 : 81.
A square ratio is the square of a ratio or fraction. For instance (1/4)^2 . The interesting thing about square ratios is they get smaller when you solve them. (1/4)^2 = 1/16