(06.01 hc)
one link in a chain was made from a cylinder that has a radius of 3 cm and a height of 25 cm. how much plastic coating would be needed to coat the surface of the chain link? use 3.14 for π.
a: 251.2 cm2
b: 314 cm2
c: 345.4 cm2
d: 471 cm2

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.