Please help I need the correct answer and explanation 1. (03.09 MC)

Each year at a college, there is a tradition of having a hoop rolling competition. Alex rolls his 0.250 kg hoop down the course. If the hoop has a radius of 50.0 cm, what is the moment of inertia of Alex's rolling hoop? (2 points)
0.0625 kg ⋅ m2
0.125 kg ⋅ m2
12.5 kg ⋅ m2
625 kg ⋅ m2

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

i would say

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..