[填空题]
If a steel band were oh4c da wx6;4q2j:wxspeo i,dw)/+xv to fi9qmb nlyo* 3eurs e8-*t snugly around the Earth’s equator at 25$^{\circ} $C, but then was heated to 45$^{\circ} $C, how high above the Earth would the band be (assume equal everywhere)? m