How do i find the length of each arc ?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?

Write the slope intercept equation for line ab.