Surface area = 2(wl+hl+hw)
We know: 94 = 2((4)(3)+h(3)+h(4))
Simplified, that is: 2(12+7h) = 94
Use distributive property to get: 24+14h = 94
Next, subtract 24 from both sides to eliminate it: 14h = 70
Finally, divide both sides by 14: h=5
The rectangular prism is 5 meters high.
Let me know if you have any questions about this!