The correct answer is A.
You have direct variation if x and y are modeled by the equation

In this case, m is the constant of proportionality. So, if the constant has to be 2, the equation becomes

A side note: Actually, option C has a constant of proportionality of two as well, except the roles of x and y are interchanged. I chose option A because usually you want the y = mx form, but the names of the variables are obviously meaningless.
Answer:
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Answer:
233568
Step-by-step explanation:
233568
use the smallest digit on the left and write in increasing order
and the greatest digit on the right as shown.
Radius=8/2=4cm
volume=4*4*3.14*20=1004.8
The answer is 1004.8cm₃