Let $x=R^2$ and consider $H_{}$ the set of concepts defined by the area inside a right triangle

ABC with two catheti $AB$ and $AC$ parallel to the axes and $Oy,$ and with the ratio $A\frac{B}{A}C=$

$($fixed constant $>0).$ Consider the realizability assumption. Show that the class $H_{}$ is $(lon,)-$PAC

learnable by giving an algorithm A and determining an upper bound on the sample complexity

$m_H(lon,)$ such that the definition of PAC$-$learnability is satisfied.