To find the surface area of a rectangular prism, you need to calculate the area of each of the six faces and then add them together.
The formula for the surface area of a rectangular prism is:
Surface Area = 2lw + 2lh + 2wh
Given:
Length (l) = 18 mm
Height (h) = 10 mm
Width (w) = 2 mm
Plug in the values into the formula:
Surface Area = 2(18)(2) + 2(18)(10) + 2(2)(10)
Surface Area = 36 + 360 + 40
Surface Area = 436 mm²
Therefore, the surface area of the rectangular prism is 436 mm².
Question
Find the surface area of a rectangular prism whose length is 18 millimeters, height is 10 millimeters, and width is 2 millimeters.(1 point)
mm2
1 answer