I keep getting 0.018. The answer is 0.18. What am I doing wrong? My final formula is (1/2)*((4pi*10-7)(1000^2)(7)(10^2))/(1000*25)

Attempt in Progress A solenoid with 1000 turns has a cross-sectional area of 7.0 cm2 and length of 25 cm. How much energy is stored in the magnetic field of the solenoid when it carries a current of 10.0 A? O 0.10 J O 2.8 J O 0.18 J O 28 J O 0.36 J Save for Later Attempts: 0 of 5 used Submit