The surface area of the prism is 256in².
Given that the sides of the prism is 5in, 12in and 4in.
The total area occupied by the surfaces of an object is called the area.
Here, l=12in, b=5in and h=4in
Firstly, we will find the area of the base, we get
B=l×b
B=12×5
B=60in²
Now, we will find the perimeter of the base, we get
P=2(l+b)
P=2(12+5)
P=2×17
P=34in
Further, we will find the surface area of the prism by using the formula SA=2B+Ph.
Here, we will substitute the values from above, we get
SA=2×60in²+34in×4in
SA=120in²+136in²
SA=256in²
Hence, the surface area of the prism where the sides of the prism is 5in, 12in and 4in is 256in².
Learn more about surface area of prism from here brainly.com/question/1581706
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