The volume of a cylinder is 4πx3 cubic units and its height is x units. Which expression represents the radius of the cylinder,
2 answers:
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Answer:
B
Step-by-step explanation:
since y and x vary directly the equation relating them is
y = kx ← k is the constant of variation
to find k use any ordered pair from the list given
using x = 4 when y = - 2, then
k = =
= - 0.5 → B