Divide by 2 digit divisors ( me with 5-8 questions pls)

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

What is the length of the unknown leg in the right triangle ?

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.