I need help please… please and thank you

Answer:
234[tex]mm^{2}[/tex]
Step-by-step explanation:
We know:
l=15mm
w=3mm
h=4mm
SA=2lw+2lh+2wh
SA=2(15)(3)+2(15)(4)+2(3)(4)
SA=234[tex]mm^{2}[/tex]
Answer:
234mm^2
Step-by-step explanation:
The answer to your problem is 234mm^2
I hope it helps! Stay safe!