what is he surface area of a rectangle prism with a 12 mm length 5 mm high 4mm wide?
I need this ? answered badly
First, figure out the area of each side.
12*5=60
12*4=48
5*4=20
Each side will have another that is the same.
You add (60+48+20)*2 to get the answer.
You want us to answer badly??
I'll try to give you a good answer.
2 * 12 * 5 = ______ sq. mm
2 * 12 * 4 = ______ sq. mm
2 * 5 * 4 = ________ sq. mm
Add the products together for the total surface area.
To find the surface area of a rectangular prism, you need to calculate the area of each of the six sides and then add them together.
First, identify the dimensions of the rectangular prism:
Length = 12 mm
Height = 5 mm
Width = 4 mm
Now, let's calculate the surface area using the formula:
Surface area = 2lw + 2lh + 2wh
Substituting the given values:
Surface area = 2(12 mm)(4 mm) + 2(12 mm)(5 mm) + 2(5 mm)(4 mm)
Calculate the products within the parentheses first:
Surface area = 2(48 mm²) + 2(60 mm²) + 2(20 mm²)
Then, calculate the products outside the parentheses:
Surface area = 96 mm² + 120 mm² + 40 mm²
Finally, add up all the results:
Surface area = 256 mm²
Therefore, the surface area of the rectangular prism is 256 mm².