Answer:
5
Explanation:
S=4lw+2wh
Put S as 136, l as 6, w as 4, and solve for h.
136 = 4(6)(4)+2(4)H
136 = 8h + 96
-8h = 96 - 136
-8h = -40
h = -40/-8
h = 5
H=5
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