Problem $9$: $(7\%$ of Assignment Value$)$

A change in the radius of a tube would cause a relative change in the laminar flow through that tube, assuming all other factors remain constant.

Randomized Variables

$r_d=5\mathrm{.}2\%$

$r_i=5\mathrm{.}2\%$

Part $($a$)$

What percent decrease in flow is obtained from a $5\mathrm{.}2\%$ decrease in radius, again assuming all other factors remain constant?

$()decrease$

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Part $($b$)$

What percent increase in flow is obtained from a $5\mathrm{.}2\%$ increase in radius, again assuming all other factors remain constant?