I need help with this problem

30 AM -- Due Date: 4/24/2024 11:59:00 PM End Date: 4/2 (20%) Problem 5: The energy of the first excited state of the electron in the box is 27.1 eV. What is the width of the box in units of nanometers? L = 1 nm sin() cosO tan( 7 8 9 HOME cotan() asino acos() E 4 5 6 atan() acotan() sinh() 2 3 cosho tanh() cotanh() + 0 END O Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback