for a critical finite cylindrical reactor (height h and radius r - ignoring an extrapolation distance), we know that a.) the first integral can be simplified to ar2. calculate the constant a ?b.) the...

for a critical finite cylindrical reactor (height h and radius r - ignoring an extrapolation distance), we know that a.) the first integral can be simplified to ar2. calculate the constant a ?b.) the second integral can be simplified to bh. what is the constant b? c.) find the value of a