Convert the angle \theta=180^\circθ=180 ∘ theta, equals, 180, degree to radians.

For this case, the first thing you should know is the following conversion of units:
 360 degrees = 2pi radians
 Applying the conversion we have: 
 θ = 180 * (2pi / 360)
 Rewriting we have:
 θ = pi
 
 the angle to radians is:
 θ = pi

A) 144.44 sq inches i believe