$($b$)$ For the steel sheet containing an edge crack an edge crack $($K $=1\mathrm{.}12$ a$),$ undera cyclic load which has a maximum stress of $200$ MPa and a minimum stress of zero.The fatigue crack growth in this steel is given by$134110($ K$)$dNda$=$ m cycle $1,$whereK $=$ Kmax Kmin. What will be the expected crack growth rate for the samemaximum and minimum stress when the crack has a length of $10$ mm$?$