can somebody help me with this?

2. Conadder at dink oitn a bector atze of lozd bytan, t. 000 tracks per werfare, 100 a ecterin per ceacx, 7 anifleraianed a) Ifou nany rocorda fit onto n track? 1) Now nainy bloeka ite rogulted to store the deording to the 'next block concept' j on diak, hoy many. rithders are treedeat? 3. Consiaer a dynamie fAM. that mist be given a refiesh aycle 64 timen pet trm. Fach refreoh operation requires 150 nsiz a menory. eycle requireg. 250ng. What pereentage of the memory g total operating bime mast be.given to tefreshes