Respuesta :
Answer:
94cm²
Step-by-step explanation:
S = 2(lw + lh + wh)
=2(20+15+12)
=40+30+24
=94cm²
Hope this helps! Can u give me brainliest, please:)
94 cm lw+ lh +wh. =2 (20+15+12 ) =40+30+24 94 cm is the answer I can’t get the other math down but it is 94cm