Answer
x=3 cm
Work Step by Step
A=2lw+2lh+2wh
94=2(x+2)(x)+2(x+2)(4)+2(4)(x)
94=2x$^2$+4x+8x+16+8x
94=2x$^2$+20x+16
47=x$^2$+10x+8
x$^2$+10x-39=0
(x+13)(x-3)=0
x=3
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.