Answer: 94 cm2
Explanation:
Hi, to answer this question we have to apply the next formula:
A = 2wl +2 lh+2hw
Where:
A = surface area of a prism
w = width
l= Length
h =height
Replacing with the values given and solving:
A = 2(4x5) +2 (5x3)+2(3x4)
A = 2(20) + 2(15)+ 2(12)
A= 40+30+24
A= 94 square centimeters
Feel free to ask for more if needed or if you did not understand something.