PLEASE HELP!

how am i supposed to label a graph using the points from the protractor?

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

If anyone who can me with this hw? i would really appreciate it

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this