Answer:
16/81
Step-by-step explanation:

=> 
=> -16/-81
=> 16/81
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Answer:
A 1:6
Step-by-step explanation:
3:18 simply to 1:6
Assuming we’re talking about a cylinder, whose volume formula is V = pi r^2 h…
It will have a greater effect to change a variable’s value that has a greater power on it.
Changing h from 1 to 2 doubles the volume.
Changing r from 1 to 4 quadruples the volume, because 1^2 = 1 and 2^2 = 4. The effect of the change on r is amplified by the power.