Question 1137914
d, diameter in cm
w, mass in kg
k, variation constant
Diameter is two multiplied by Radius.


{{{d=k*root(3,w)}}}



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Given that the mass is 27kg when the diameter is 21cm, find the radius when the mass is 512kg.
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Substitute and solve.  You need the first part to find k first, before finding HALF the diameter.